LS-DYNA uses the FEM approximation for advection velocity while setting VELMETH = 1 causes :dyna:LS-DYNA to use PFEM2 for advection velocity. The default was the opposite in the past, but it was preventing nonlinear iterations for
Use PHASE = 1 or 2 when you need to use LS-DYNA to preload the model (as opposed to ANSYS) before running the transient portion of the analysis. PHASE = 1 applies the load initially and then immediately removes the load. As a result, the load is removed, and the structure vibratesfr...
Added the option to output relative displacement, velocity and acceleration in SSD computation in the case of base acceleration. Previously only absolute values were provided. Implemented keyword *FREQUENCY_DOMAIN_MODE_{OPTION} so that user can select the vibration modes to be used for frequency resp...
As the topic title, I would like to ask for your help in understanding why, when simulating with LS-DYNA, I want to stop the crash, but it seems impossible despite trying various methods such as changing velocity, acceleration, friction, etc.My case:I am simulating a rubber object A with...
4、LS-DYNA中的操作及设置(一)(精度控制,单位制,截面,双精度) 5、LS-DYNA中的接触问题(三)(单面接触,实体接触,接触刚度) 6、LS-DYNA中分析选项中的能量选项stonewall energy Sliding interface 还有其他两项是什么意思 LS-DYNA中的操作及设置(五)(应变率,质量缩放) ...
softwaretechnologycorporationdatabaseextentbinarydatabaseextentbinary对写入到二进制输出文件中的数据进行控制默认输出3个积分点midbottomtop的数据默认情况下lsdyna计算的弹性应变是不输出的各向异性正交异性的材料其应力可以在全局坐标系中输出也可以在材料坐标系中输出matorthotropicelastic除外livermoresoftwaretechnology...
( Input curve: a 2 L r ^ P e g S l PSD or SPL e ( c c A Freq (Hz) Freq (Hz) 31 Example: cluster server under PSD acceleration GRMS = 1.63 g A cluster server is analyzed by LS-DYNA to understand the location Hz g^2/Hz of vibration damage under standard random vibration ...
见下面LS-DYNA FAQ中的定义Definition of a consistent system of units (required for LS-DYNA): 1 force unit = 1 mass unit * 1 acceleration unit 1 力单位 = 1 质量单位 × 1 加速度单位 1 acceleration unit = 1 length unit / (1 time unit)^21 加速度单位 = 1 长度单位/1 时间单位的平方...
ANSYS Workbench LS-DYNA Users Instructions 34 LS-DYNA Keywords Generated – Initial and Boundary Conditions ? Initial conditions – Velocity – Angular Velocity – Both create keyword *INITIAL_VELOCITY. ? Loads – Inertial: Acceleration and Standard Earth Gravity. Both create keyword *LOAD_BODY_X, ...
This enables the LS-DYNA to build the Craig-Bampton linear representation of a part using constraint and eigenmodes. Superelements constructed by *CONTROL_IMPLICIT_STATIC_CONDENSATION and *CONTROL_IMPLICIT_MODES are written in either the Nastran extended format for DMIG files or a LS-DYNA binary ...