ON MODAL ANALYSIS OF PHASE-FIELD FRACTURE MODELS

被引：0
|
作者：
Jukic, Kresimir [1 ]
Jarak, Tomislav [1 ,2 ]
Tonkovic, Zdenko [1 ]
Lorenzana, Antolin [2 ]
机构：
[1] Univ Zagreb, Fac Mech Engn & Naval Architecture, Zagreb, Croatia
[2] Univ Valladolid, Sch Ind Engn, ITAP, Valladolid, Spain
来源：
6TH INTERNATIONAL CONFERENCE ON MECHANICAL MODELS IN STRUCTURAL ENGINEERING, CMMOST 2021, 2 EDITION | 2022年
关键词：
phase-field; brittle fracture; dynamic response; modal analysis; BRITTLE-FRACTURE;
D O I：
暂无
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
In this work, the modal response of a phase-field model of a damaged structure is performed and the influence of various phase-field model parameters on the dynamic response is analysed. Instead of analysing hypothetical cracks, here the crack geometries of the damaged body are predicted by a quasi-static crack propagation simulation by means of an adaptive phase-field method, performed prior to the modal analyses. The modal analyses are performed with respect to the damaged configurations obtained during the fracture simulations. The natural frequencies and corresponding mode shapes of a plate modelled as a tree-dimensional body with a crack has been inspected. Various modifications of the phase field fracture model are used in the modal analysis. The influence of element size and length scale are also studied. From the results, the recommendations for performing the modal analysis of phase-field models are drawn.
引用
收藏
页码：301 / 320
页数：20
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