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요약정보
典型汽车板的动态力学特性分析 / ANALYSIS OF DYNAMIAC MECHANICAL PROPERTIES OF TYPICAL AUTOMOBILE STEEL PLATE
Resource Type
Academic Journal
Authors
董伊康
;
熊自柳
;
罗扬
;
王健
;
杨婷
;
王立辉
;
Dong Yikang
;
Xiong Ziliu
;
Luo Yang
;
Wang Jian
;
Yang Ting
;
Wang Lihui
Source
河北冶金 / Hebei Metallurgy
. (1):22-27
Subject
轻量化
汽车用钢
高速拉伸
应变速率
屈服强度
抗拉强度
Language
Chinese
ISSN
1006-5008
Online Access
Find it @ DONGA
초록
采用高速拉伸试验机,对车身常用板材DC06、HC340LA、HC420/780DP 3种汽车用钢,实施了不同应变速率(0.003 s-1、20 s-1、50 s-1、100 s-1、200 s-1、400 s-1、700 s-1)条件下的高速拉伸实验,得到相应的应力-应变曲线,并对其进行了动态力学特性分析.结果表明:3种汽车钢均表现出应变速率敏感特性,材料在动态载荷作用下存在应变速率强化效应,屈服强度和抗拉强度均大于准静态条件下的相关指标.同时在高应变速率下,材料呈现出增塑特征,强度级别越低的材料,应变速率敏感性越大,并且屈服强度的应变速率敏感性要高于抗拉强度.
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