基于参数敏感性的拉伸夹具响应面优化
Optimization of tensile fixture by response surface method based on parameter sensitivity
陈鑫 1寇会贤 1刁东明 1李品豫 1林明明 1宁惠君1
作者信息
- 1. 河南科技大学 土木建筑学院,河南 洛阳 471000
- 折叠
摘要
针对轻薄型复合材料的力学性能测试中,传统夹具普遍存在加持力不足、试件滑移等问题,创新性地提出了一种新型可定位双夹层拉伸夹具的设计.基于响应面法(RSM),对拉伸夹具的连接结构进行优化设计.分析结果表明:优化前拉伸夹具的最大等效应力位置在外夹固定块与外夹板间的连接结构处,且存在应力集中现象,而整体结构在最佳优化方案下,最大等效应力降低了17.2%,最大总变形减少了13.6%.通过仿真模拟代替实际试验,能够有效降低生产成本,对拉伸夹具的结构优化设计具有一定参考意义.
Abstract
In the mechanical performance test of lightweight composite materials,the traditional fixtures commonly suffer from insufficient clamping force and specimen slippage.To solve the problem,a novel locatable double-layered tensile fixture was designed.Response surface method(RSM)was used to optimize the connecting structure of the tensile fixture.The analysis results showed that the maximum equivalent stress of the tensile fixture before optimization was located at the connection structure between the outer fixing block and the outer plate,and there was stress concentration;in the optimized scheme,the maximum equivalent stress decreased by 17.2%,and the maximum total deformation decreased by 13.6%.By repla-cing the actual test with simulation,the production cost is effectively reduced.The structural optimization design of the tensile fixture has certain reference significance.
关键词
拉伸夹具/结构参数化/响应面法(RSM)优化设计Key words
tensile fixture/structure parameterization/response surface method(RSM)/optimal design引用本文复制引用
基金项目
2022国家级大学生创新训练项目(202210464023)
2021年度河南科技大学高等教育教学改革研究与实践项目(2021BK148)
出版年
2024
NETL
NSTL
维普
万方数据