The OpenSees Community

ignore the text posted to the screen .. the compiler nor exe is actually obtaining info from the MAkefile or system about whether the 32 or 64 bit version being compiled .. if you want to change it it is in SRC/tcl/tclMain.cpp

OpenSees is unitless .. it is thus you who distinguishes between them .. as for stress-strain or force-deformation it depends on the usage of the material, e.g. if in a zero-length element it is force-deformation, if a fiber in a section it is stress-strain

depends if you expect large displacement (translation and rotation) at the location .. you could always do the analysis with both and compare the result to see if it matters yourself.

google redirect stderr and stdout for your operating system

no .. it just adds fibers with an area and a material along a line to a section

no .. you need o download using svn and then build .. to build you need a Makefile.def .. a few are provided in MAKES directory .. many of which are old, the ones Makefile.def.EC2.... are reasonab;y up to date and are provided for most of common linux platforms .. also go to the framework message bo...

it is compatable with windows 7 .. we have just not updated the text in the download page

betaKcomm will use the stiffness matrix at the last time step .. as for modal It should be in the version available for download. Not all solvers have been modified to work with it, all but the sparse should work, and it does not work yet in parallel. there are 2 commands: modalDamping $ratio modalD...