I have seen people adding some percentages of live and superimposed dead loads to the mass of the floor. The model is then run (in Etabs) to obain the eigenvalue, i.e. natural frequency. As we know natural frequency is not a function of external loads, what is the rationale of considering the...
Hi users
Anyone can explain the term Etotal in ABAQUS for checking purposes. I u derstand it is a energy check but what if Etotal grows with Internal Energy and its magnitude is comparable with the Internal Energy as well? Does this mean the model is wrong -possibly due to rigid body motion...
Dear all
I wonder have any of you encouter such error:
***ERROR: A ZERO DISPLACEMENT SOLUTION WAS FOUND IN THE FIRST ITERATION OF A
RIKS STEP. THE ANALYSIS CANNOT PROCEED. THE MOST LIKELY CAUSE IS
THAT ALL DISPLACEMENT DEGREES-OF-FREEDOM ARE CONSTRAINED TO BE ZERO...
Dear all
From a survey report of a subsea pipeline, i am managed to read off the weight of the pipe in per metre run (say X). This weight has taken account of the various components of the composite pipes (i.e. concrete, steel and anti corrosion coating etc) and the buoyancy.
However, i need...
Dear all
I wonder if any of you have done any such analysis using abaqus or some other softwares? I understand it is extremely difficult to model the subsea condition. Care to share your experience?
Rgds
sgdon
Hi all,
Given the same weight of similar explosives but at different distance from the target, is there any relationship on this with the duration of the 1st shock wave? (Assume peak pressures can be obtained)
Thanks
sgdon
Dear all
Given a laminate of areal density 50 oz/yard sq and a 25 GPa modulus in the fibre direction, can i extrapolate the results to obtain the modulus of a laminate with 25 oz/yard sq density? Assume the 2 laminates have the same fibre volume fraction. Any crude estimates will also be...
Hi members,
Can anyone provide some information, advice or insights on what is the usual practices of making use of FEA to model composites, especially when the composites are subjected to damages due to dynamic loadings.
Any input and discussion on this thread will be greatly appreciated...
Dear memebers,
can anyone explain the reason why a material point would failed to converge in an increment step for a numerical analysis. I am using Abaqus/Explicit.
Thanks.
sgdon
Dear Members,
I have the uniaxial stress strain curve of a weld material and need to find the dissipated/breakage energies by pure shear and pure tension of this material. Any pointers?
Thanks
jaw woei
Dear members
I appreciate anyone could provide me any info regarding about the the assessment or modelling of residual stress in blast damaged composite (or any other materials).
Regards
sgdon
