期刊文献+
共找到3篇文章
< 1 >
每页显示 20 50 100
损伤与断裂耦合效应的能量理论研究及应用 被引量:1
1
作者 安丽媛 朱为玄 +1 位作者 卓鹏飞 孙伟伟 《河海大学学报(自然科学版)》 CAS CSCD 北大核心 2012年第2期201-205,共5页
以Ⅰ型裂纹为主要研究对象,基于能量法和损伤能量释放率的概念,推导出一种用于描述裂纹尖端邻域内损伤场与断裂场的耦合效应参数:损伤型能量释放率.运用双G模型理论,应用ANSYS仿真分析三点弯曲梁的裂纹扩展过程,把得到的损伤型能量释放... 以Ⅰ型裂纹为主要研究对象,基于能量法和损伤能量释放率的概念,推导出一种用于描述裂纹尖端邻域内损伤场与断裂场的耦合效应参数:损伤型能量释放率.运用双G模型理论,应用ANSYS仿真分析三点弯曲梁的裂纹扩展过程,把得到的损伤型能量释放率结果与损伤断裂的参数进行对比分析.结合盖下拱坝工程有限元模型,将人工底缝前沿损伤型的能量释放率、平均损伤、能量释放率以及损伤能量释放率4者随水位变化的发展进行比较,说明该参数可以综合考虑损伤与断裂的耦合效应.此外,建立了该参数的应用模式. 展开更多
关键词 土木工程结构损伤 能量法 耦合效应参数 损伤型能量释放率 盖下拱坝
下载PDF
Phase Synchronization of Coupled Rossler Oscillators: Amplitude Effect 被引量:1
2
作者 LI Xiao-Wen ZHENG Zhi-Gang 《Communications in Theoretical Physics》 SCIE CAS CSCD 2007年第2期265-269,共5页
Phase synchronization of two linearly coupled Rossler oscillators with parameter misfits is explored. It is found that depending on parameter mismatches, the synchronization of phases exhibits different manners. The s... Phase synchronization of two linearly coupled Rossler oscillators with parameter misfits is explored. It is found that depending on parameter mismatches, the synchronization of phases exhibits different manners. The synchronization regime can be divided into three regimes. For small mismatches, the amplitude-insensitive regime gives the phase-dominant synchronization; When the parameter misfit increases, the amplitudes and phases of oscillators are correlated) and the amplitudes will dominate the synchronous dynamics for very large mismatches. The lag time among phases exhibits a power law when phase synchronization is achieved. 展开更多
关键词 phase synchronization amplitude eiiect
下载PDF
Screening-Dependent Study of Superconductivity in 3d-Transition Metals Binary Alloys Superconductors
3
作者 Aditya M.Vora 《Communications in Theoretical Physics》 SCIE CAS CSCD 2009年第3期533-539,共7页
In the present article, we report the screening-dependent study of the superconducting state parameters (SSPs), viz. electron-phonon coupling strength A, Coulomb pseudopotential μ^*, transition temperature TC, iso... In the present article, we report the screening-dependent study of the superconducting state parameters (SSPs), viz. electron-phonon coupling strength A, Coulomb pseudopotential μ^*, transition temperature TC, isotope effect exponent a, and effective interaction strength No V of 3d-band transition metals binary alloys superconductors have been made extensively in the present work using a model potential formalism and employing the pseudo-alloy-atom (PAA) model for the first time. Five local field correction functions proposed by Hartree (H), Taylor (T), Ichimaru-Utsumi (IU), Farid et al. (F) and Sarkar et al. (S) are used in the present investigation to study the screening influence on the aforesaid properties. The present results of the SSPs obtained from H-screening are found in qualitative agreement with the available experimental data wherever exist. 展开更多
关键词 PSEUDOPOTENTIAL superconducting state parameters (SSPs) 3d-band transition metals binary alloys superconductors
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部