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Simulate moving laser beam on a plate in ANSYS

Submitted by daltoy3 on
software
glass
ansys
moving heat source
laser
thermal simulation

Hi everyone!

I've been trying ansys for a few weeks but in vain. I'm trying to inject a heat source(laser) on a 2D rect plate. I'm not sure on the corrct way to add the boundary conditions. This is what I do:

1. assuming room temp so i added 298K to the bottom, left and right using define loads >add_temp>lines

2.next i inject a heat source say 1000K using define loads>add_temp_on nodes to a few surface center nodes (meaning the top surface still have undefine boundary conditions)  

How to classify vehicle parts into sprung and unsprung mass?

Submitted by vinay.warrier on
opinion
automobile
mass
vehicle dynamics
parameters
inertia

I am currently working on deriving equations for different vehicle models using Lagrangian and Newtonian methods. I am need of parameters to test few MATLAB models, and in vague to know exactly how to classify the mass into sprung and unsprung. Similarly, how do I obtain the MOI separately for the unsprung mass?

WARNING: THE AVERAGE FORCE USED TO ENFORCE CONTACT CONSTRAINTS AT NODE SPRING-1.86 IS 383.736E+03 TIMES LARGER THAN

Submitted by lkean85 on
research
spring element

I am trying to simulate and spring analysis by using concentrated force on Abaqus 6.9.

Job cannot be performed due to the following warning and error. May i know the solution!

8th International Tutorial Workshop on PFM and Nanoscale Electromechanics of Polar Materials, August 25-27, 2010, Beijing, China

Submitted by jiangyuli on
conference

This workshop aims
to provide in-depth description and recent advances in piezoresponse force microscopy (PFM) and nanoscale
electromechanics. It will introduce basic principles of PFM operation, relevant
instrumental aspects, and image interpretation. The theory of cantilever
dynamics, PFM contact mechanics, resolution theory, and their implications for
qualitative and quantitative data interpretation will be presented. The recent
technical advances, including vector PFM, high-frequency PFM, band-excitation
and DRFT imaging, switching spectroscopy PFM, and imaging and polarization
switching in liquids and vacuum, will also be illustrated. For ferroelectric
and multiferroic materials, applications of PFM for domain imaging, nucleation

Sharing an abaqus UMAT using an elastic viscoplastic model for soil

Submitted by jovebird on
research
User subroutines in ABAQUS
UMAT
viscous
creep relax

Here is a UMAT using an  elastic viscoplastic model for soil

Modifed Cam-clay model coupled with viscosity.


 

ABAQUS - UMAT (Free Download for Research Purposes)



A user-defined subroutine in ABAQUS for viscous soils.

Introduction:

The ABAQUS subroutine is for viscous soils, which
usually have the following characteristics.

First post - about rheology

Submitted by andrewsun on
research
rheology

The first post on iMechanica, which is an interesting site. First, it is scientists/engineers-targeted which is hard to get so crowded. And second it is exceptionally free. Everyone is free to post everything including ads, and there is no maintenance of "academic standard" or "quality" over here. However all the post I can see are of the topic of mechanics. I believe I will find it more interesting and helpful in the future.

Piezoelectric bimorph cantilever using ANSYS software

Submitted by salem on
software
Ansys Boundary Conditions for free-vibration MEMS cantilever power harvester

I'm using Ansys 12 for modeling and simulation. can you help me that, how I can enter data loads as boundary conditions for a piezoelectric cantilever beam?

thank you for your assistance. 

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