稳健性(进化)
实验数据
结构工程
水准点(测量)
可靠性(半导体)
材料科学
计算机科学
工程类
数学
地质学
统计
生物化学
化学
功率(物理)
物理
大地测量学
量子力学
基因
作者
Omar El Khatib,Geralf Hütter,Rinh‐Dinh Pham,Andreas Seupel,Meinhard Kuna,Bjöern Kiefer
标识
DOI:10.1007/s10704-023-00689-9
摘要
Abstract Damage mechanics models exhibit favorable properties such as the intrinsic influence of stress triaxiality on damage evolution and the prediction of crack initiation as well as propagation leading to structural failure. However, their application requires advanced expertise hindering the transfer of these models into industrial practice, especially since the parameter calibration is a key obstacle. In this paper, a simplified procedure is proposed for a non-local extension of the Gurson–Tvergaard–Needleman model (GTN), which is a highly accepted model for ductile failure of metals. The procedure is iteration free and requires experimental input data from only two standardized tests. The parameters are determined using look-up diagrams created on the basis of systematic simulations and made available for different material behavior covering the majority of ductile metals. Benchmark tests for three different steels are conducted to evaluate the robustness of the proposed procedure. The reliability of the GTN model is validated for all investigated materials.
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