椭球壳液压胀形过程焊缝建模方式的研究OA北大核心CSCDCSTPCD
Research on Weld Seam Models for Hydro-forming of Ellipsoidal Shell
为了研究焊缝区域有限元建模方式对椭球壳胀形过程轴长变化规律的影响,提出3种焊缝建模方式:即完整焊缝模型,粗略焊缝模型与无焊缝模型.首先进行初始轴长比为1.8的椭球壳的液压胀形实验研究,得到轴长随内压力的变化规律.其次进行了3种建模方式的椭球壳胀形过程的数值模拟,对比数值模拟和实验过程轴长变化规律,分析建模方式对模拟精度的影响.结果表明:在变形初期,3种建模方式的模拟精度相近,尺寸偏差均小于4％;但是在变形中后期,无焊缝模型的模拟精度较差,最大尺寸…查看全部>>
In order to study the effect of weld seam models on hydro-forming of ellipsoidal shell,three kinds of models,i.e.,comprehensive model rough model and no weld seam model were built and the influence was discussed on variation of axis length.An experiment for hydro-forming of ellipsoidal shell with initial axis length ratio 1.8 was first carried out,and the axis length varying with the increasing of internal pressure was obtained.Simulation on three kinds of f…查看全部>>
张伟玮;滕步刚
哈尔滨工业大学材料科学与工程学院,哈尔滨150001哈尔滨工业大学材料科学与工程学院,哈尔滨150001
矿业与冶金
焊缝模型椭球壳液压胀形
weld seam modelellipsoidal shellhydro-forming
《材料工程》 2017 (3)
60-65,6
长江学者和创新团队发展计划资助(IRT1229)
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