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Disjointed Equivalence of Gravitational and Inertial Mass
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作者 Dirk J. Pons 《Journal of Modern Physics》 CAS 2023年第3期237-270,共34页
Problem—Contemporary physics offers no underlying reason for the equivalence of inertial and gravitational mass. Approach—The equivalence is examined from the new physics provided by the cordus theory, being a non-l... Problem—Contemporary physics offers no underlying reason for the equivalence of inertial and gravitational mass. Approach—The equivalence is examined from the new physics provided by the cordus theory, being a non-local hidden-variable (NLHV) theory. Mathematical formalisms are derived for masses and observers in different fabric densities. Findings—A disjointed equivalence is predicted, whereby inertial and gravitational masses are equivalent in any one situation, but a different equivalence holds when the fabric densities change. Consequently this theory predicts that the gravitational constant G varies with fabric density, and hence would be different across the universe and across time. Not only is the gravitational constant non-constant, but the formulation of gravitation changes with fabric density. Specifically, the theory predicts gravity is stronger at genesis (and the end of the universe) such that orbit velocity v<sub>B</sub> ∝  (where r<sub>B</sub> is orbit radius), compared to weaker gravitation at middle life epochs with r<sub>B</sub><sub> </sub>∝ . The current Earth location and epoch correspond to the latter case, i.e. Newtonian gravitation is recovered. The findings disfavour the existence of both dark energy and dark matter, and instead attribute these effects to differences in the fabric density. Originality—The work makes the contribution of deriving a mass equivalence relationship that includes fabric density, identifying a disjointed mass equivalence, and showing that the gravitation formulation itself changes with relative fabric densities. 展开更多
关键词 Identity of mass GRAVITATION inertia General Relativity Quantum Mechanics
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Star Mass Inertia Dictates the Speed of Light 被引量:1
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作者 Weihong Qian 《Journal of High Energy Physics, Gravitation and Cosmology》 2022年第1期184-194,共11页
This paper indicated that Newton’s law of gravitation is a statistical relation of two adjacent objects with a distance and Einstein’s general relativity shows the internal connection of material distribution throug... This paper indicated that Newton’s law of gravitation is a statistical relation of two adjacent objects with a distance and Einstein’s general relativity shows the internal connection of material distribution through space-time warping in our universe so general relativity is referred as a gravity theory. Here the paper gives an extension of general relativity in the sense of the metric theory of gravity which is consistent with Einstein’s equivalence principle and generates a weak field approximation which extends Newtonian dynamics. Thus, the extended theory of gravity can infer that the light has a speed limit of photon escaping the mass inertia of a star. 展开更多
关键词 NEWTON EINSTEIN Star mass inertia PHOTON Gravity the Speed of Light
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RENEWAL OF BASIC LAWS AND PRINCIPLES FOR POLAR CONTINUUM THEORIES (Ⅵ)—CONSERVATION LAWS OF MASS AND INERTIA
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作者 戴天民 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2003年第12期1369-1374,共6页
The purpose is to reestablish the coupled conservation laws, the local conservation equations and the jump conditions of mass and inertia for polar continuum theories. In this connection the new material derivatives o... The purpose is to reestablish the coupled conservation laws, the local conservation equations and the jump conditions of mass and inertia for polar continuum theories. In this connection the new material derivatives of the deformation gradient, the line element, the surface element and the volume element were derived and the generalized Reynolds transport theorem was presented. Combining these conservation laws of mass and inertia with the balance laws of momentum, angular momentum and energy derived in our previous papers of this series, a rather complete system of coupled basic laws and principles for polar continuum theories is constituted on the whole. From this system the coupled nonlocal balance equations of mass, inertia, momentum, angular momentum and energy may be obtained by the usual localization. 展开更多
关键词 polar continua coupled transport theorem conservation law of mass and inertia
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How to Demonstrate the Lorentz Factor: Variable Time v.s. Variable Inertial Mass
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作者 Olivier Serret 《Journal of Modern Physics》 2015年第3期252-259,共8页
For a century, hypothesis of a variable time is laid down by the Relativity Theory. This hypothesis can explain many Nature observations, experiments and formulas, for example the Lorentz factor demonstration. Because... For a century, hypothesis of a variable time is laid down by the Relativity Theory. This hypothesis can explain many Nature observations, experiments and formulas, for example the Lorentz factor demonstration. Because of such good explanations, the hypothesis of a variable time has been validated. Nevertheless, it remains some paradoxes and some predictions which are difficult to measure, as a reversible time or the time variation itself. The purpose of this article is to study another hypothesis. If it gives interesting results, it would mean that this alternative hypothesis can also be validated. The idea in this paper is to replace the variable time by a variable inertial mass. To the difference with the Theory of Relativity (where the inertial mass and the gravitational mass are equal and variable), the gravitational mass is here supposed to be constant. So, starting from the definition of the kinetic energy, it is introduced the Lorentz factor. And then it is demonstrated the value of the Lorentz factor thanks to a variable inertial mass. This variable inertial mass can also explain experiments, like Bertozzi experiment. If this alternative demonstration was validated, it could help to open doors, other physical effects could be explained like the addition of velocities. 展开更多
关键词 LORENTZ FACTOR VARIABLE TIME RELATIVITY Light Celerity inertial mass mass of inertia Gravitational mass Bertozzi Michelson and Morley
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活动支座摩擦效应对墩底地震反应的影响
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作者 江信焱 陈旭 +1 位作者 李建中 梁博 《结构工程师》 2024年第4期56-65,共10页
活动支座被广泛应用于大跨度连续梁桥的活动墩以及斜拉桥、悬索桥的边墩和辅助墩处。本文以布置活动支座的大跨度桥梁桥墩为研究对象,首先探讨了支座摩擦效应对活动墩墩底地震反应的影响,结果表明:对于墩身质量相对较小的活动墩,墩底地... 活动支座被广泛应用于大跨度连续梁桥的活动墩以及斜拉桥、悬索桥的边墩和辅助墩处。本文以布置活动支座的大跨度桥梁桥墩为研究对象,首先探讨了支座摩擦效应对活动墩墩底地震反应的影响,结果表明:对于墩身质量相对较小的活动墩,墩底地震反应随摩擦系数的增加而增加;但对于墩身质量相对较大的活动墩,墩底地震反应随摩擦系数的增加呈现先减小、后增加的变化规律。进一步,本文对墩底地震反应随摩擦系数的变化规律的机理进行了研究,研究发现:地震作用下,当摩擦系数较小时,由于支座摩擦力和墩身地震惯性力持续反向作用,可能导致活动墩墩底反应随摩擦系数的增加而减小。由于影响实际桥梁活动支座摩擦系数的因素多且复杂,按规范给定的摩擦系数计算得到的墩底地震反应可能小于实际的墩底地震反应,导致下部结构的震后修复时间和成本增加或安全性降低。 展开更多
关键词 墩底地震反应 摩擦系数 墩身惯性力 墩身质量 非线性时程分析
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机械网络运动方程与构网型VSG惯量阻尼的比较
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作者 陈伊健 李先允 张旭 《自动化与仪表》 2024年第6期6-9,15,共5页
随着新能源和电力电子设备的广泛应用,新型电力系统面临着多方面的不稳定性挑战。为了克服这些挑战,采用构网型(grid-forming,GFM)控制技术,可以通过电压支撑和主动惯量调节替代同步机,以确保电力系统的稳定性。但构网型变流器自身的惯... 随着新能源和电力电子设备的广泛应用,新型电力系统面临着多方面的不稳定性挑战。为了克服这些挑战,采用构网型(grid-forming,GFM)控制技术,可以通过电压支撑和主动惯量调节替代同步机,以确保电力系统的稳定性。但构网型变流器自身的惯量阻尼机理尚不明确,其阻尼系数往往被忽略。该文从机械系统的运动方程出发,首先通过推导质量-弹簧系统的运动方程和构网型虚拟同步机控制方程本质上都是二阶微分方程;然后,通过实验仿真验证了机械网络和电气网络的惯量阻尼机理的一致性;最后,通过Matlab/Simulink仿真在IEEE 39节点系统中验证构网型VSG的阻尼系数在维持稳定同步状态中的关键作用。 展开更多
关键词 构网型变流器 虚拟同步机控制 质量-弹簧系统 惯量阻尼特性
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舰载设备在基础运动激励下的动力响应分析方法
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作者 卢枫 何朝勋 《舰船科学技术》 北大核心 2024年第3期178-183,共6页
为了解决舰载设备在基础运动激励下的动力响应问题,本文通过对比惯性载荷法、大质量法、大刚度法、直接激励法的动力学方程,探讨不同方法的特点和应用条件,并给出相应的算例与结果分析,为开展舰载设备的动力响应计算提供理论依据及方法。
关键词 舰载设备 动力响应 惯性载荷法 大质量法 直接激励法
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弹射过程人椅系统动态质量特性的建模与分析
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作者 黄可义 郁嘉 +1 位作者 黄守刚 林贵平 《航空科学技术》 2024年第3期94-102,共9页
人椅系统的质量特性是弹射座椅轨迹和姿态控制精度的重要影响因素。由于缺乏动态质量特性仿真模型,现阶段采用静态参数设计的弹射座椅控制规律可能在实际应用中出现偏差。本文在弹射座椅六自由度运动模型的基础上,考虑火箭包工作质量变... 人椅系统的质量特性是弹射座椅轨迹和姿态控制精度的重要影响因素。由于缺乏动态质量特性仿真模型,现阶段采用静态参数设计的弹射座椅控制规律可能在实际应用中出现偏差。本文在弹射座椅六自由度运动模型的基础上,考虑火箭包工作质量变化、人体脊柱压缩、座椅座垫压缩和人体头颈部转动等影响因素,建立了弹射过程人椅系统动态质量特性的计算模型。通过对三个典型工况计算结果的分析,说明了计算模型的合理性;最后分别采用动态、静态质量特性模型对弹射过程轨迹姿态进行仿真,并分析了两模型在救生效果上的差异性。本文建立的模型可以为后续弹射座椅控制规律的精细化设计提供借鉴。 展开更多
关键词 弹射座椅 弹射救生 动态质量特性 重心 转动惯量
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沙滩车动力总成惯性参数辨识
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作者 鲁大坤 周长峰 +2 位作者 吕龙飞 董培阳 周壮 《农业装备与车辆工程》 2024年第2期64-68,共5页
为获取沙滩车(ATV)动力总成惯性参数,对沙滩车动力总成进行了惯性参数辨识试验。为获取准确的激励点、响应点坐标,使用三维扫描仪测量。利用质量线法计算了沙滩车动力总成惯性参数。为研究激励点数量对沙滩车动力总成惯性参数的影响,对... 为获取沙滩车(ATV)动力总成惯性参数,对沙滩车动力总成进行了惯性参数辨识试验。为获取准确的激励点、响应点坐标,使用三维扫描仪测量。利用质量线法计算了沙滩车动力总成惯性参数。为研究激励点数量对沙滩车动力总成惯性参数的影响,对比了不同数量激励点对应的沙滩车动力总成惯性参数。研究表明,至少19个激励点、8个三方向响应点可以辨识到稳定的沙滩车动力总成惯性参数。 展开更多
关键词 沙滩车动力总成 参数辨识 质量线 激励方向 惯性参数
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General Derivation of Mass-Energy Relation without Electrodynamics or Einstein’s Postulates
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作者 Mario Rabinowitz 《Journal of Modern Physics》 2015年第9期1243-1248,共6页
The mass-energy equation ?is derived in general from Newton’s equation of motion without use of electrodynamics, or Einstein’s Postulates which were presented in his superb 1905 paper on Special Relativity (SR). Thi... The mass-energy equation ?is derived in general from Newton’s equation of motion without use of electrodynamics, or Einstein’s Postulates which were presented in his superb 1905 paper on Special Relativity (SR). This was previously not thought to be possible. This novel derivation of an accelerated body of rest mass m0 is compared with the traditional SR inertial derivation. A discussion is given of pre-1905, electrostatic and electrodynamic derivations of the mass-energy relation yielding , as well as more recent ones. A concise pre-relativity history of the mass-energy relation is traced back to Newton in 1717. 展开更多
关键词 mass-Energy RELATION mass Variation inertia EINSTEIN Newton Special Relativity mass-Energy Origin mass-Energy History
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An improved HSFR method for natural vibration analysis of an immersed cylinder pile with a tip mass
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作者 Kai Wei Wancheng Yuan +1 位作者 Najib Bouaanani Chih-Chen Chang 《Theoretical & Applied Mechanics Letters》 2012年第2期72-75,共4页
Immersed cylinder piles are usually modelled as immersed carrying a tip mass and rotary moment of inertia. In this paper, an immersed cylinder pile along transversal modes of vibration are of water and structural damp... Immersed cylinder piles are usually modelled as immersed carrying a tip mass and rotary moment of inertia. In this paper, an immersed cylinder pile along transversal modes of vibration are of water and structural damping are included in the formulation. cantilever cylinder columns the equations of motion of developed. Compressibility Natural frequencies of the immersed pile are obtained from the developed equations using harmonic sweep frequency response analyses. The proposed method is applied to numerical examples, and the results obtained are shown satisfactory when compared to other numerical solutions in the literature, or to finite element solutions and experimental data. 展开更多
关键词 vibration analysis cylinder pile fluid-structure interaction sweep frequency responsemethod tip mass and moment of inertia
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Gravity, Not Mass Increases with Velocity
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作者 Eli Peter Manor 《Journal of Modern Physics》 2015年第10期1407-1411,共5页
There are controversies and misunderstandings with the term “relativistic mass”. So, alternative concepts must be considered. It is postulated herewith that the stronger force required to accelerate an object moving... There are controversies and misunderstandings with the term “relativistic mass”. So, alternative concepts must be considered. It is postulated herewith that the stronger force required to accelerate an object moving at a faster speed is due to the increase of its inertia. That ensues in a rise in the gravitational force required to pull that object, and thereby brings to an increase in the gravitational constant. In this paper a formula is derived to calculate these variations in the gravitational constant, which is: . This makes the use of the term “relativistic mass” unnecessary. 展开更多
关键词 Relativistic mass GRAVITY Increase mass Definition inertia Related to VELOCITY GRAVITY DUE to inertia
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A Classical Explanation for Relativistic Longitudinal and Transverse Mass Increase
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作者 Declan Traill 《Journal of Applied Mathematics and Physics》 2021年第8期1904-1910,共7页
In this paper, I show that the Special Relativistic effect of mass increase that occurs within objects when they move at high speed can be explained using Classical Physics principles. In my analysis, the wave nature ... In this paper, I show that the Special Relativistic effect of mass increase that occurs within objects when they move at high speed can be explained using Classical Physics principles. In my analysis, the wave nature of condensed matter and energy/mass equivalence are taken into consideration. The wave nature of particles is modelled as the particle structure comprising three-dimensional standing waves. When this is done, the difference in the energy sum of the component waves that comprise a particle moving at a high speed, when compared to those of a stationary particle, completely accounts for the mass increase. Furthermore, the additional momentum of the wave components in the direction of motion (the Longitudinal direction) is the cause of the inertia, or effective mass, of the object being greater than that in the Transverse direction (orthogonal to the direction of motion). 展开更多
关键词 Special RELATIVITY CLASSICAL Physics RELATIVISTIC mass Longitudinal Transverse inertia Component INCREASE Standing Wave Equivalence Condensed Matter
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高速履带车辆机电悬架惯量分析与滤振缓冲设计 被引量:2
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作者 宋慧新 顾亮 +2 位作者 张进秋 董明明 王利明 《兵工学报》 EI CAS CSCD 北大核心 2023年第2期380-393,共14页
为解决高速履带车辆机电悬架在高频区性能恶化与结构可靠性的问题,分析基于扭杆的机电悬架刚度特性,求解悬架杆系复杂运动关系,计算机电执行器的等效惯性质量,建立考虑惯性质量与负重轮阻尼的2自由度机电悬架模型。量化分析惯性质量对... 为解决高速履带车辆机电悬架在高频区性能恶化与结构可靠性的问题,分析基于扭杆的机电悬架刚度特性,求解悬架杆系复杂运动关系,计算机电执行器的等效惯性质量,建立考虑惯性质量与负重轮阻尼的2自由度机电悬架模型。量化分析惯性质量对悬架性能的不利影响,得到影响悬架平顺性、部件可靠性的惯性力的频域分布区间与功率谱密度分布区间。根据悬架惯性力的频域分布,以及悬架动挠度的幅频特性,提出滤振与缓冲的措施,建立带有滤振缓冲器的悬架模型。仿真和试验结果表明:滤振缓冲能够有效降低惯性质量影响,在D级路面40 km/h行驶工况下,将原惯性力的均方根值由原2 143 N降低至175 N。同时簧载质量加速度均方根值,由原3.510 8 m/s^(2)降低至1.268 2 m/s^(2)。台架测试证明齿圈应力在采用滤振缓冲措施后得到较大衰减,最大值由519.9 MPa降低为110.1 MPa。通过仿真和试验,验证了滤振与缓冲的措施能够提升机电悬架的性能,有助于解决惯性质量带来的高频区性能恶化的问题。 展开更多
关键词 惯性质量 惯性力 滤振 缓冲 机电悬架
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Comparative Phenomenological Description of Even-Even Isotopes at Mass Region A ≈ 70
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作者 Samir U. El-Kameesy Hesham Shahbunder +1 位作者 Karima E. Abdelmageed Heba Elwany 《Journal of Applied Mathematics and Physics》 2016年第3期511-518,共8页
In the present work the nuclear structure properties and the backbending phenomena of even-even isotopes at A ≈ 70 mass region are analyzed using two simultaneous theoretical models based on a simple modified version... In the present work the nuclear structure properties and the backbending phenomena of even-even isotopes at A ≈ 70 mass region are analyzed using two simultaneous theoretical models based on a simple modified version of the collective model predictions besides an improved version of exponential model with the inclusion of pairing correlation. In general, both models successfully describe the backbending phenomena in that region. From the comparison between the predictions of the two proposed models a firm conclusion is obtained concerning the superiority of the simple improved version of the exponential model in describing the forward and down-bending region of the φ-ω<sup>2</sup> plots. 展开更多
关键词 Energy Levels Moment of inertia Yrast Bands BACKBENDING Cr Ge Se and Kr Even mass Isotopes Collective Model Exponential Model
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汽车底盘测功机惯性系统开发研究 被引量:16
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作者 任有 许洪国 +2 位作者 李显生 张小芸 张永录 《公路交通科技》 CAS CSCD 北大核心 2002年第3期141-143,共3页
基于汽车底盘测功机系统中功率动态平衡的原理 ,提出底盘测功机惯性系统与汽车质量的匹配规律 ,设计了为SHENCK36 4D/L70 0型底盘测功机配套的惯性系统及其控制系统。在车辆最大质量 10t范围内 ,惯性系统能有效地实现惯性质量匹配。与... 基于汽车底盘测功机系统中功率动态平衡的原理 ,提出底盘测功机惯性系统与汽车质量的匹配规律 ,设计了为SHENCK36 4D/L70 0型底盘测功机配套的惯性系统及其控制系统。在车辆最大质量 10t范围内 ,惯性系统能有效地实现惯性质量匹配。与加速踏板自动控制装置、多工况跟踪显示装置集成的控制系统可满足各工况条件汽车动力性能测试的要求 ,特别是能精确地模拟车辆加速、减速、爬坡、滑行等工况。本系统也可用于实现驾驶员驾驶行为适应性评判。 展开更多
关键词 汽车 底盘测功机 惯性系统 惯性质量匹配 控制系统 功率动态平衡 动力性检测
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引力搜索算法的改进 被引量:43
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作者 徐遥 王士同 《计算机工程与应用》 CSCD 北大核心 2011年第35期188-192,共5页
引力搜索算法GSA(Gravitationa lSearch Algorithm)是最近由Esmat Rashedi基于引力定律提出的一个新算法。在引力搜索算法的基础上对其进行改进,得到了基于权值的引力搜索算法。与引力搜索算法相比,该算法在每一次迭代的过程中,都对粒... 引力搜索算法GSA(Gravitationa lSearch Algorithm)是最近由Esmat Rashedi基于引力定律提出的一个新算法。在引力搜索算法的基础上对其进行改进,得到了基于权值的引力搜索算法。与引力搜索算法相比,该算法在每一次迭代的过程中,都对粒子的惯性质量加一个权值。用算法对许多基准函数测试的实验效果表明,该方法可以使得引力搜索算法得到更好的结果。 展开更多
关键词 引力搜索算法(GSA) 引力定律 惯性质量 权值 基准函数
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改进的引力搜索算法用于阵列天线方向图综合 被引量:4
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作者 孙翠珍 丁君 +2 位作者 兰建锋 郭陈江 袁建涛 《西北工业大学学报》 EI CAS CSCD 北大核心 2017年第5期780-785,共6页
针对基本引力搜索算法在处理复杂的阵列天线综合问题时,存在早熟收敛和收敛速度慢的缺陷,提出了一种混合引力搜索算法。首先将精英粒子保护算法及后进粒子微扰算法嵌入到基本的引力搜索算法中,延长了粒子的存活时间,扩大了粒子邻域的搜... 针对基本引力搜索算法在处理复杂的阵列天线综合问题时,存在早熟收敛和收敛速度慢的缺陷,提出了一种混合引力搜索算法。首先将精英粒子保护算法及后进粒子微扰算法嵌入到基本的引力搜索算法中,延长了粒子的存活时间,扩大了粒子邻域的搜索范围,保护了种群的多样性,较大程度上改善了算法过早收敛的问题;其次重新定义了惯性质量调节系数q,使种群中粒子惯性质量的差距增大,算法能够快速有效地收敛于问题的最优解,从而改善了全局收敛性与局部收敛性的平衡。将该算法用于20元阵列天线方向图综合中,仿真结果表明,与基本的引力搜索算法以及同类智能优化算法相比,改进后的算法在计算精度和收敛速度,及种群多样性方面均有显著改善。 展开更多
关键词 引力搜索算法 精英粒子 后进粒子 惯性质量调节系数 方向图综合
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MTMD对建筑结构多模态控制的减震分析 被引量:11
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作者 涂文戈 邹银生 《地震工程与工程振动》 CSCD 北大核心 2003年第5期174-179,共6页
本文研究了MTMD对建筑结构多模态减震控制。将主结构简化为多自由度模型,MTMD对结构的反力与地震荷载共同作为结构的荷载输入进行分析;基于主结构多模态耦合进行推导分析,阐述了MTMD与结构之间的相互作用关系,提出MTMD的复惯性质量。提... 本文研究了MTMD对建筑结构多模态减震控制。将主结构简化为多自由度模型,MTMD对结构的反力与地震荷载共同作为结构的荷载输入进行分析;基于主结构多模态耦合进行推导分析,阐述了MTMD与结构之间的相互作用关系,提出MTMD的复惯性质量。提出MTMD的控制类型是加速度相关型的无源被动控制。从频域传递函数,白噪声、宽带和窄带地震激励下的结构相对位移和绝对加速度谱密度,以及El-centro地震波作用下结构的地震响应三个方面,分析了MTMD对顶部带有结构附属物的结构的控制效果。并且给出TMD的控制效果加以比较验证。算例说明MTMD多模态控制对结构的相对位移和绝对加速度均有较好的控制效果,并且优于TMD控制效果。 展开更多
关键词 MTMD TMD 减震 多模态控制 复惯性质量
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基于模糊控制器的整车ABS检测试验台技术研究 被引量:4
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作者 周茹波 苏建 +2 位作者 张立斌 戴建军 杨运生 《汽车技术》 北大核心 2006年第6期21-23,共3页
通过对整车ABS性能的分析,针对在ABS台架检测时的汽车惯性质量模拟问题,提出了无级模拟汽车惯性质量的电模拟方法,并根据检测台的系统特性和经验制定了模糊控制规则表,建立了电模拟方法的理论模型。设计了整车ABS检测台的模糊控制器,并... 通过对整车ABS性能的分析,针对在ABS台架检测时的汽车惯性质量模拟问题,提出了无级模拟汽车惯性质量的电模拟方法,并根据检测台的系统特性和经验制定了模糊控制规则表,建立了电模拟方法的理论模型。设计了整车ABS检测台的模糊控制器,并对电模拟方法进行了仿真分析。 展开更多
关键词 制动防抱死系统 惯性质量 模拟 模糊控制
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