双金属复合板矫直应力中性层偏移的影响

发布时间：2018-05-06 19:02

本文选题：复合板 + 矫直　；参考：《中国科技论文》2015年22期

【摘要】：为提高双金属复合板在矫直过程中矫直力的精度,从弹塑性力学角度,对双金属复合板矫直过程中金属的三维弹塑性变形进行分析,推导出应力中性层偏移量的计算公式。当已知材料的屈服极限,并测得上、下弹性区范围时,由该计算公式可求得应力中性层偏移量。结合十一辊矫直机,利用ANSYS软件对双金属复合板矫直单元在不同载荷下的应力进行模拟,得出应力中性层偏移量的数值模拟曲线,并讨论了中性层偏移量与载荷之间的关系。通过对比理论公式与有限元模拟结果表明,理论公式可以更加精确地反应双金属复合板受载时中性层偏移的情况。
[Abstract]:In order to improve the accuracy of the straightening force of bimetallic composite plate in the process of straightening, the three-dimensional elastic-plastic deformation of bimetallic composite plate during straightening process was analyzed from the angle of elastoplastic mechanics, and the formula for calculating the displacement of stress neutral layer was deduced. When the yield limit of material is known and the range of upper and lower elastic zone is measured, the displacement of stress neutral layer can be obtained from the formula. The stress of bimetallic composite plate straightening unit under different loads is simulated by using ANSYS software, and the numerical simulation curve of stress neutral layer migration is obtained, and the relationship between neutral layer migration and load is discussed. By comparing the theoretical formula with the finite element simulation results, it is shown that the theoretical formula can more accurately reflect the neutral layer migration of bimetallic composite plate under load.
【作者单位】：太原科技大学重型机械教育部工程研究中心;
【基金】：山西省高等学校优秀青年学术带头人支持计划资助项目(OIT,20131086) 国家自然科学基金资助项目(51104104) 国家重点基础研究发展计划(973计划)资助项目(2012CB722801) 山西省基础研究计划资助项目(2012021019-3) 高等学校博士学科点专项科研基金资助项目(20111415110001)
【分类号】：TG333.23

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