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viscoplastic analysis of lap shear solder joint

Submitted by luvsharma11 on

Hi all,

I am trying to model a solder joint in double lap shear. I am using the Modified Anand's Model. But for some reasons the analysis is not completing and does not gives any errors as well. Since I am new to abaqus, I am not able to solve this. Here is my input file:

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Journal Club Theme of July 2011: Three Dimensional Biologically Inspired Microvascular Systems

Submitted by Howon Lee on

From venation of leaves to the blood and lymph vessels and tracheae of insects, 3D filamentous branching networks are a common pattern in all higher organisms.  These busy “highways” supply the tissue with nutrition and oxygen, expel waste and heat, as well as conduct immune reactions and other signal pathways. These microvascular networks are also essential for effective response of external stimuli in some sensitive plants, such as Venus flytrap and Mimosa pudica.

PhD Studentship: Rock Fracture and Fragmentation - Imperial London, UK

Submitted by apaluszn on

PhD Studentship: Rock Fracture and Fragmentation

IMPERIAL COLLEGE, LONDON, UNITED KINGDOM

APPLICATION DEADLINE: 15 AUGUST 2011

 

Background: The Rio Tinto Centre for Advanced Mineral Recovery was founded

in 2008 in the Department of Earth Science and Engineering, Imperial College

London. The Centre is a partnership between Imperial College and Rio Tinto,

one of the world’s largest mining companies, and is aimed at developing safer,

ABAQUS load/surface coupling. User element loads – VUEL and VDLOAD

Submitted by skiller on

Hi,



I am attempting to couple a moving multi-body load to a surface using ABAQUS/explicit, i.e. the loading varies depending on the surface displacement at the previous time step.



I realise that VDLOAD cannot access values such as element displacement directly but can access variables using tools such as utility subroutines e.g. UEXTERNALDB.  The only problem is that such utility routines only seem to work for ABAQUS implicit.



Similarly vgetvrm can be used to output stress values but not displacement.



Stress-strain hysteresis model

Submitted by Rani on

Hi all,

 

Is it possible to model stress-strain hysteresis loops (with isotropic or/and kinematic hardening) without using rate quations? For the case of monotonic loading, bilinear or trilinear  hardening models can be easily written. But in the case of cyclic loading can the Bauschinger effect be incorporated in a simply manner?

Boundary Conditions in Unit Cell with ABAQUS

Submitted by M.A. Rahman on

Hey,

I am trying to do simulation of one eighth of the unit cell with single void at the center in ABAQUS. I have problem with boundary conditions. I am using *Equation constraint in ABAQUS. But it is not working properly. I can not figure it out which one or two should be my control points or master nodes and what DOF should be used. Can anyone give me suggesations regarding this problem. Thanks in advance.

 

Local water slamming impact on sandwich composite hulls

Submitted by kaushik das on

Recently we analyzed water-slamming impacts on sandwich composite hulls. Water slamming impact problems are very interesting problems involving fluid-structure interactions.  A link to our paper and the abstract are given below. I hope that you will find the paper interesting. Please feel free to write your comments below.      

Kaushik Das and Romesh C. Batra, Local water slamming impact on sandwich composite hulls, Journal of Fluids and Structures, Volume 27, Issue 4, May 2011, Pages 523-551