| 基于焊点与相邻单元一体化应变能的灵敏度评价方法研究 |
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| 引用本文： | 宋海生,杨娜,杨昌海,陈志勇,史文库.基于焊点与相邻单元一体化应变能的灵敏度评价方法研究[J].汽车工程,2020,42(6):820-825. |
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| 作者姓名： | 宋海生 杨娜 杨昌海 陈志勇 史文库 |
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| 作者单位： | 吉林大学,汽车仿真与控制国家重点实验室,长春130022;一汽-大众汽车有限公司技术开发部,长春130022;一汽-大众汽车有限公司技术开发部,长春130022;吉林大学,汽车仿真与控制国家重点实验室,长春130022 |
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| 摘 要： | 焊点对于结构的动刚度有很大的影响,在以结构动刚度作为目标的焊点优化中,焊点灵敏度的评价至关重要。鉴于目前焊点灵敏度的评价方法在某些情况下可能导致错误结果,本文中提出一种基于焊点与相邻单元一体化应变能的灵敏度评价方法,并与传统方法进行了对比验证。结果表明,本文中提出的方法能更准确地反映焊点对于结构动刚度的影响程度。
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| 关 键 词： | 焊点 灵敏度 有限元法 动刚度 应变能 |
Research on Sensitivity Evaluation Method Based on Spot Welds-Adjacent Elements Integrated Strain Energy |
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| Song Haisheng,Yang Na,Yang Changhai,Chen Zhiyong,Shi Wenku.Research on Sensitivity Evaluation Method Based on Spot Welds-Adjacent Elements Integrated Strain Energy[J].Automotive Engineering,2020,42(6):820-825. |
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| Authors: | Song Haisheng Yang Na Yang Changhai Chen Zhiyong Shi Wenku |
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| Institution: | (Jilin University,State Key Laboratory of Automotive Simulation and Control,Changchun 130022;Technology Development Department,Faw-Volkswagen Automotive Co.,Ltd.,Changchun 130022) |
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| Abstract: | Spot-welds have great influence on dynamic stiffness of structure,and the evaluation of the sensitivity of structure to spot-welds is very important in the spot-welds optimization with the dynamic stiffness of structure as objective.In view of that in some cases the traditional sensibility evaluation method for spot welds may get a wrong result,a sensibility evaluation method based on spot welds-adjacent element integrated strain energy is proposed and a comparative verification with traditional one is conducted.The results show that the method proposed can more accurately reflect the influence extent of spot welds on the dynamic stiffness of structure. |
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| Keywords: | spot-welds sensitivity FEM dynamic stiffness strain energy |
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