首页> 外国专利> Method and article of manufacture for estimating material failure due to crack formation and growth

Method and article of manufacture for estimating material failure due to crack formation and growth

机译:用于估计由于裂纹形成和扩展而导致的材料失效的方法和制造物品

摘要

A multiaxial strain cycle (32, 72) is received that is described by a strain tensor that is a function of time. A hyperelastic constitutive model (34, 74) corresponding to the material is received. A fatigue crack growth curve (36, 76) is obtained. A cracking energy density is calculated (50, 90) based on the constitutive model (34, 74) and the multiaxial strain cycle (32, 72). The cracking energy density is a function of material plane (44, 84) and indicates the portion of the total elastic strain energy density that is available to be released on a selected material plane (48, 88). A cracking plane is determined (54, 98) based upon the cracking energy density. A fatigue life is estimated (60, 100) based on the cracking plane and the fatigue crack growth curve (36, 76).
机译:接收到一个多轴应变循环( 32,72 ),该应变循环由应变张量描述,该应变张量是时间的函数。接收对应于材料的超弹性本构模型( 34、74 )。获得疲劳裂纹扩展曲线( 36、76 )。根据本构模型( 34,74 )和多轴应变循环( 32,72 )计算开裂能量密度( 50,90 ) >)。裂纹能量密度是材料平面( 44,84 )的函数,表示总弹性应变能量密度中可在选定的材料平面上释放的部分( 48, 88 )。根据裂化能量密度确定裂化平面( 54、98 )。根据裂纹面和疲劳裂纹扩展曲线( 36、76 )估算疲劳寿命( 60、100 )。

著录项

  • 公开/公告号US6634236B2

    专利类型

  • 公开/公告日2003-10-21

    原文格式PDF

  • 申请/专利权人 COOPER TECHNOLOGY SERVICES LLC;

    申请/专利号US20010945058

  • 发明设计人 WILLIAM VERNON MARS;

    申请日2001-08-31

  • 分类号G01N290/40;

  • 国家 US

  • 入库时间 2022-08-22 00:06:41

相似文献

  • 专利
  • 外文文献
  • 中文文献
获取专利

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号