巨胎液压硫化机应力测试与有限元分析

Stress-test and finite element analysis for the giant-type hydraulic vulcanizing machine

介绍188″巨胎液压硫化机的基本结构和工作原理,结合传统的应变电测法确定贴片与温度补偿方案;给出具体实施的应力测试方法,并对该硫化机合模机构进行合模应力测试。测试结果表明:最大拉应力发生在第12根合模杆的0°位置,大小为94.5MPa。由于加工误差造成各合模杆在0°与180°位置的应力相差较大,但整个合模机构能够安全承载,满足实际工作要求,这说明主要承载机构具有足够的抗拉强度。通过ANSYS有限元分析软件对合模机构做有限元计算分析,找出了硫化机实际工作时的应力分布情况,验证了硫化机的安全可靠性,证明合模机构在工作时承受拉伸和弯曲的组合载荷作用;对比实验结果与计算出的应力分布情况,二者吻合较好,验证了计算的正确性。

Introduced the basic structure and working principle for the 188-inch giant-tire hydraulic vulcanizing machine,combining to the traditional strain electric testing method,fixed patch and temperature compensation plans;the implementation of stress test method was given,and the matched molds stress test for the mode-locking structure of vulcanizing machine was conducted.Test results showed that the maximum stress was happened in the position of zero degree of No.12 of mode-locking rod,and its value was 94.5MPa.Due to processing errors,it caused larger stress difference between in the zero degree position and one hundred eighty degree position for every mode-locking rod,but the entire mode-locking structure was loaded safely,satisfied the actual work requirement,and that meant the main loaded structure had enough tensile strength.Through the ANSYS soft,the finite element analysis was carried out for the mode-locking structure of vulcanizing machine,the stress distributions during the actual vulcanization condition was found,this verified the reliability and safety of it and proved that the mode-locking structure loaded combination loads（tension and bending） during the actual vulcanization condition;comparing the experiment result with the stress-test result,they have verified the calculating correct results.