research

I am going to study the diaphragm behaviour of the composite slab under the lateral loading.

To simulate the system using FEM package (such as ANSYS or ABAQUS). the obtained results from FEM package would then be verified by experimental results that must be done by myself.

Hi, I am wondering if anyone can give me suggestion on the following problem.

 I would like to do Frequency response study on a viscoelastic material. The frequency response computation usually takes a modal damping ratio. However the viscoelatic material is defined by K (elastic bulk modulus), G0 (short-time shear modulus), Gi (long-time shear modulus) and Beta (decay constant).

Is there a way to find  the modal damping ratio from the time domain viscoelastic material parameters (K, G0, Gi and Beta)? E.g. in a FEM environment?

 Thanks.

Hi all ... i have been doing element deletion extensively in my analysis but was wondering ... wat are the Pros and Cons of using this method. To my knowledge was wondering how the deleted mass and energy are conserved through out the analysis. Thank you all.

Dielectric elastomer, as an important category of electroactive polymers, is known to have viscoelastic properties that strongly affect its dynamic performance and limit its application. Very few models accounting for the effects of both electrostatics and viscoelasticity exist in the literature, and even fewer are capable of making reliable predictions under general loads and constraints. Based on the principals of nonequilibrium thermodynamics, this paper develops a field theory that fully couples the large inelastic deformations and electric fields in deformable dielectrics.

Hi friends,

I am studying about cyclic behaviour  of steel-concrete composite column. When i am giving material properties of steel, i have doubt  about Isotrophic Hardening and Kinematic Hardening, which one i have to use to get cyclic behaviour of column.

 Thank You

R.Velmurugan