Blog posts

Presentazione seminario Alenia Aermacchi

hi....i m working on ansys(mehanical apdl).....here i m doing non linear material model analysis of a two panel slab....i have chosen material model 1 as multilinear elastic and entered the graph in that and took material no.2 for steel with EX=2E8,PR=.33....units are in SI.....NOW I m getting the warning as"For material 1 at temperature 0 has a tangent slope of its stress strain curve <75000> greater than EX <6.0134717-154>..............can anyone suggest some solution for this....

I have put a history output request of displacement of a set of nodes in my model but the history output request doesnt how up in the results tree. Please  help.

Thanks in advance ,

Saurabh

Dispense materiali compositi

i am working to thermal ratchetting preaaure vesseles and pipes

and I'm doing with the software abaqus(combined hardening model)

but i have problem:

i use 2 step in abaqus

1-general-static for pressure

2-coupled-temp displacement for thermal loading

but when in submit abaqus -i get this eror

combined hardening dont use couled temp-displacement?

what is my problem?????????????

Dear all,

Can someone suggest me literature where the problem "tensile stresses developed in an elastic body accelerated by an attractive body force" is discussed.  The situation is similar to finding the stresses developed in a celestial body falling into black hole (though my interest is in impact with adhesive forces).

The problem is about solving the inhomogeneous wave equation, where inhomogeneous part is due to the attractive force.  So any helpful hints in that direction will also be useful.