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spring in Abaqus
Hi
I am modelling two plates that have been attached to each other using screws. i have modelled some springs for the screws. the shell element has been used for the plates. i want to assign the spring element (say SPRINGA) for the screws but i do not know how.
thank you.
Physicists Won 2010 Nobel Prize for Discovery of Graphene
As announced on 5 Oct. 2010, Andre Geim and Konstantin Novoselov of the University of Manchester won the 2010 Nobel Prize in physics "for groundbreaking experiments regarding the two-dimensional material graphene". Geim and Konstantin first reported the experimental observation of graphene in 2004 . Novoselov, 36, is also the youngest physics laureate since 1973.
23rd Annual Melosh Competition at Duke University
The 23nd Annual Melosh Competition for the Best Student Paper on Finite Element Analysis will be held at Duke University on April 29, 2011. The competition has become one of the premier graduate student events in the broad area of mechanics.
Can the transformation matrix of a 3-D beam element have any zeros in its diagonal?
Hello,
I am trying to solve the global stiffness matrix for a component assumed to be a series of 3-D beam elements.
Some of the diagonal elements of the transformation matrix are zeros and i eventually end up in finding the inverse of a matrix with some zeros in its diagonal which is not possible.
Can anyone let me know if the transformation matrix can have zeros along its diagonal?
Thank you.
DESIGN OF MOLECULES and IOSO OPTIMIZATION
Dear Colleagues,
We are pleased to inform you that at the conference Inverse Problems, Design and Optimization Symposium (IPDO) that was held in João Pessoa, Brazil from 25-27 of August, 2010 the results of application of IOSO optimization software were presented for a new complex class of optimization problems: Design of Molecules.
Constitutive Equation
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Dear friends
Can you help me to find the relationship between true (Cauchy) stress and Almansi strain (constitutive equation)?
thanks
Evoution of Yield surfaces: Past and Future Trend - Part 1
It is essential to know the amount of springback for a given forming process, so that the process or the design of the tool can be modified to obtain the desired product shape. This requires a comprehensive understanding of loading and unloading processes, and determination of elastic constants with finite plastic deformation which, in turn, require precise determination of subsequent yield surfaces.
Dynamic Analysis of Shell Element
I have some problems with my matlab code in a 9 node shell
element each node has 5 DOFs. I found that stiffness matrix for each
element is symmetric, but after transformation to global coordinate
system, the transformed stiffness matrices and the resulted global
stiffness matrix of entire shell is nonsymmetric, where order of
transpose([k]) -[k] is approximately E-18.
Mass matrix also has
been antisymmetric after transformation and so I can't solve
characteristic equation to find eigenvalues needed for dynamic analysis.
Journal Club October 2010: Mechanical behaviour of highly packed particulate composites
Materials such as sedimentary rocks, pharmaceutical tablets, plastic bonded explosives, biscuits, concretes, nacre, solid propellants, seashells and asphalts can be treated as particulate composites that consist of particles of high volume fraction, matrixes of thin layer and interfaces of high specific surface area. Mechanical behaviour of highly packed particulate composites is the theme of this issue of Journal Club forum.