(1)不可对刚体上的节点进行单点约束,刚体的约束通过*MAT_RIGID 材料定义中的相关参数来设置平动约束和转动约束,施加在质心上。 (2)刚体的材料参数应使用真实的值,如杨氏模量(在接触中用来计算接触力)、泊松比和密度。不可认为刚体不变形而把杨氏模量设置为任意大。 (3)缺省地情况下,LS-DYNA 自动地通过有限元网...
简述:三点压弯试验也是一个较典型的案例,以往不考虑焊点强度直接采用rigid创建连接,本例采用mat100创建对应焊点。 工况:上下两个分别为刚-铝材质,两者通过焊点连接,最上端钢棒以10m/s的速度向下压,模型各个部件间采用面面接触,摩擦系数为0.3 动画:
41 -- 2:36 App 05-用Rigidbody连接可变形体 37 -- 8:59 App 15_轮毂三个部件之间建立2个Joint 169 -- 1:01:38 App 03_常用材料的介绍 65 -- 3:19 App 11_抽取2D网格(包壳)建立接触 142 -- 2:02 App 12_通过Set_Segment建立接触 13 -- 4:57 App E01_BOM 10 -- 9:19 App ...
对粒子之间以及粒子与物体之间的接触力有影响
Validating dynamic crush response of unidirectional carbon fibre tube via finite element analysis method using LS-DYNA The tubular finite element model was modelled using MAT54 and was impacted by a 65KG rigid wall impactor with an impact velocity of 55 km/h. Material card parameters were evaluate...
Force-closure workspace analysis of cable-driven parallel mechanisms A cable-driven parallel mechanism (CDPM) possesses a number of promising advantages over the conventional rigid-link mechanisms, such as simple and light-w... BP Cong,HY Song,G Yang,... - 《Mechanism & Machine Theory》 被引...
The studies reveal the general applicability for the calibration of a complex material card by the example of the used MAT_187_SAMP-1. Keywords: parameter identification; machine learning; hyperparameter optimization; LS-DYNA; MAT_187_SAMP-1; GISSMO failure model...
The studies reveal the general applicability for the calibration of a complex material card by the example of the used MAT_187_SAMP-1. Keywords: parameter identification; machine learning; hyperparameter optimization; LS-DYNA; MAT_187_SAMP-1; GISSMO failure model...