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You can see cam follower mechanism for clean energy cheaper than coal. My cam follower mechanism is different than today’s cam follower. In general cam follower system,

Hi all,

I am looking for an algorithm to get the inverse of a 4^th rank tensor (e.g. the compliance tensor S_(ijkl) from elastic stiffness tensor C_{_(ijkl)}) S_(ijkl)=C_{_(ijkl)}^{^(-1)}

I am programming in FORTRAN, and for this purpose I wasn't able to find neither any algorithm nor any existing subroutine.

If anyone at this forum has any idea about this inversion, kindly guide me.

Best regards,

Mubeen.

I want to start a dynamic calculation in Abaqus in which, for every node, I specify the displacements, velocities and accelerations. I know that by the *IMPORT command, I can start a calculation with a deformed mesh, and that the velocities can be defined by in the *INITIAL CONDITIONS, but how to deal with non zero user defined accelerations? Have any body did that? Is it possible with a subroutine?

Thanks for any help

Hi,

I am trying to model asphalt concrete as viscoelastic mayterial in abaqus. As I have seen from past studies, people have used prony series parameters for time domain viscoelasticity and additionally also used elastic modulus from resilient modulus test data. As I already have dynamic modulus test data, I can calculate prony series parameter from it but the problem is with resilient modulus. Do I need to run resilient modulus test again to get the elastic parameter in abaqus or is there any other way to work with dynamic modulus test?

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Global dimming is simply described as the reduction in the amount of solar radiation reaching the earth. This is caused by the following, increased amount of particulate matter and pollutants such as carbon monoxide, sulphur dioxide and soot. Due to the increase in energy demand, fossil fuel combustion has led to the emission of green house gases which causes global dimming. These subatances coalease with water droplet on the cloud, as the pollution increases more bonds are formed and a reflective layer is formed the impedes solar radiation from reaching the surface of the earth.