Seismosoft | Earthquake Engineering Solutions

<t>Dear Seismosoft (and/or forum members),<br/> <br/> I have a column for modelling P-delta effects which is pinned at each end. When I run an analysis with geometric non-linearities on, this member develops a non-zero shear forces and the axial force is less than expected. Clearly this is some issu...

<t>Dear Seismosoft,<br/> <br/> Two questions on the Takeda hysteresis rule as described in the SeismoStruct (V6) help manual.<br/> <br/> 1) The diagram shows the first reloading branch of the loop going to some arbitrary point. What defines this point and why does it not go to the yield point instea...

Dear Seismosoft,

In future versions of the programme could you please try to incorporate tangent stiffness proportional damping for constant ductility spectra. It appears at the moment that it is initial stiffness proportional.

Matt.

<t>Thanks huffte,<br/> <br/> My question was more directed towards resolving what the ambiguous option of 'None' under local damping means. Does it mean (a) There will be no damping for the element considered (i.e the word 'None' has an equivalent meaning to when it is used to specify no damping on ...

Is it possible to specify zero local damping? It appears the choosing 'none' under local damping does not mean the same thing as choosing 'none' on the global level.

Regards,
Matt.

<t>Dear Seismosoft,<br/> <br/> When defining a reinforced concrete rectangular section (rcrs)there is the option to 'Edit reinforcement pattern', which allows the user to define a simple pattern of reinforcing. The centre of all reinforcing bars are located on the margin between core and cover concr...

<t>Dear Seismosoft,<br/> <br/> When the damping matrix is computed with a stiffness proportional component and geometric nonlinearities are included, which stiffness matrix is used? Is it the stiffness matrix including or excluding the geometric nonlinearities? My concern is that the latter may lead...

<t>Dear Seismosoft,<br/> <br/> I have modelled a U-shaped wall in SeismoStruct v5.2 and the computed moments (when displacement is parallel to the flanges)do not equal those found from experimental testing of the wall and analyses using other programmes. When the same file (originally created in v5....

<t>Dear Seismosoft,<br/> <br/> I am having problems with the text file output. If I select (under settings) for a single text file output it gives a whole lot of nonsense . For example in nodal deformation it gives the x through to rz values and then keeps going with other random values. If instead ...