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hi and thanks cbrn: yes,i set Global Y-axis as spectrum direction,but my structure is symmetric, its cross section is circular then i think that there is no diffrent in x or y direction,but in spectrum analysis when i set global y -axis as specrum direction i check y displacement.do u think...

hi please some one help me to solve this problem. it is urgent to me. thanks

hi please some one help me to solve this problem. it is urgent to me. thanks

hi please some one help me to solve this problem. it is urgent to me. thanks

hi dears: I have a structure and do two seismic analyses with it. 1-spectrum analysis 2-transient analysis But the thing that is very strange is different result obtained from them. Stress, nodal displacement, and ......are different. I expect that at least nodal displacement at top of...

hi SKJoe thanks alot for your response, i do every things that u said but again like my past problem when i check the result at nodes that I set the displacment load, there is difference between my load data and the data that shown in post26 result plot. I don't know why it happened,please help...

hi thanks for your response as you know people usually use solid65 element for concrete then because of it i didn't say any thing but befor TBDATA command i wrote: TB,CONCR,1 TBDATA,1,0.25,0.25,0.1E6,7E6 IS it correct? i mean that do i describe tensile strenght like this? strenght of my concrete...

hi my dear freinds i want to see crack in solid65 element and describe a tbdata like this : TBDATA,1,0.25,0.25,0.1E6,7E6 IS it correct? i mean that do i describe tensile strenght like this? strenght of my concrete material is 0.1Mpa. thanks regard

hi SKJoe thanks alot for your response, i do every things that u said but again like my past problem when i check the result at nodes that I set the displacment load, there is difference between my load data and the data that shown in post26 result plot. I don't know why it happened,please help...

please help me if someone knows it. thanks in advance regard

I intend to do a transient analysis and using dis versus time data as displacement load at the base of my Structure,I make a table using *Dim and set it as displacement load in my problem(D command),but I don't know how to set up my transient analysis option, do I have to describe separately a...

Hi every body I had 1560 acceleration versus time data(ELCENTRO EARTHQUAKE DATA) and I wanted to do a transient analysis, after I saw more topics about seismic and transient analysis I understand that I have to convert my acceleration data to displacement so I use *VOPER and INT2 commands to do...