Search found 25 matches

by yaqiang.jiang
Mon Jan 24, 2011 3:39 pm
Forum: Framework
Topic: linking errors to SOE and Solver
Replies: 3
Views: 5259

Re: linking errors to SOE and Solver

fmk wrote:
> looks like it is missing some standard fortran libraries that are not
> linked when you use a c++ compiler


problem solved, bunch of thanks :)
by yaqiang.jiang
Mon Jan 24, 2011 2:38 pm
Forum: Framework
Topic: linking errors to SOE and Solver
Replies: 3
Views: 5259

Re: linking errors to SOE and Solver

fmk wrote: > looks like it is missing some standard fortran libraries that are not > linked when you use a c++ compiler Frank, Thanks for your reply. I included additional libraries supplied in the OpenSees lib folder. The problem was almost solved, almost.... but still have 2 errors: 1>------ Build...
by yaqiang.jiang
Mon Jan 24, 2011 11:23 am
Forum: Framework
Topic: linking errors to SOE and Solver
Replies: 3
Views: 5259

linking errors to SOE and Solver

Dear Frank, I've created a main function to solve heat transfer problem by using some of the OpenSees classes. In my main file, I included the following two headers. #include <BandGenLinSOE.h> #include <BandGenLinLapackSolver.h>; Then I got massive errors related to blas.lib and lapack.lib. Seems th...
by yaqiang.jiang
Fri Dec 10, 2010 8:53 am
Forum: Framework
Topic: Initial acceleration & Newmark method
Replies: 1
Views: 2499

Initial acceleration & Newmark method

Hi Frank,

I didn't find where and how the initial acceleration is calculated in Newmark.cpp.The initial acceleration is necessary to get the correct load vector at n+1 step (Eqn 11.13-5, Cook's book 4ed). Bunch of thanks in advance for your explanation.
by yaqiang.jiang
Tue Nov 09, 2010 4:59 am
Forum: Framework
Topic: UML Notations in OpenSees
Replies: 1
Views: 2558

UML Notations in OpenSees

Hi Frank, I noticed in your recent paper, Nonlinear Finite-Element Analysis Software Architecture Using Object Composition,you used the directional association between Domain and its components instead of using aggregation as before. And the relationship between AnalysisModel and DOF_Group/FE_Elemen...
by yaqiang.jiang
Wed Oct 06, 2010 3:30 am
Forum: Framework
Topic: Confusion with the DirectIntegrationAnalysis::domainChanged
Replies: 1
Views: 2329

Confusion with the DirectIntegrationAnalysis::domainChanged

Dear Frank, I've got problems with two statements inside the body of DirectIntegrationAnalysis::domainChanged() : theDOF_Numberer->numberDOF(); theConstraintHandler->doneNumberingDOF(); The two are invoked sequentially and both of them invoke the method FE_Element::setID() to assign equation numbers...
by yaqiang.jiang
Tue Sep 14, 2010 4:31 am
Forum: Framework
Topic: how to apply dynamic ElementalLoad on a 2d rectangular plane
Replies: 0
Views: 1859

how to apply dynamic ElementalLoad on a 2d rectangular plane

assume use 4 node quadrilateral element the distributed load information is read from an input file with the following format: time x y load 1 0 0 500 1 0 0.5 250 1 0 1 600 .................... The above data is given arbitarily,just for clarification. The location for each load is exactly the same ...
by yaqiang.jiang
Tue Sep 14, 2010 4:29 am
Forum: Framework
Topic: how to apply dynamic ElementalLoad on a 2d rectangular plane
Replies: 0
Views: 1726

how to apply dynamic ElementalLoad on a 2d rectangular plane

assume use 4 node quadrilateral element the distributed load information is read from an input file with the following format: time x y load 1 0 0 500 1 0 0.5 250 1 0 1 600 .................... The above data is given arbitarily,just for clarification. The location for each load is exactly the same ...
by yaqiang.jiang
Tue Sep 14, 2010 4:17 am
Forum: Framework
Topic: how to apply dynamic ElementalLoad on a 2d rectangular plane
Replies: 0
Views: 1848

how to apply dynamic ElementalLoad on a 2d rectangular plane

how to apply dynamic ElementalLoad on a 2d rectangular plane assume use 4 node quadrilateral element the distributed load information is read from an input file with the following format: time x y load 1 0 0 500 1 0 0.5 250 1 0 1 600 .................... The above data is given arbitarily,just for c...
by yaqiang.jiang
Tue Sep 14, 2010 4:16 am
Forum: Framework
Topic: how to apply dynamic ElementalLoad on a 2d rectangular plane
Replies: 0
Views: 1672

how to apply dynamic ElementalLoad on a 2d rectangular plane

Dear All and Frank, It seems I have a tricky problem and badly need your help. Assume we use 4 node quadrilateral element. The distributed load information is read from an input file with the following format: time x y load 1 0 0 500 1 0 0.5 250 1 0 1 600 1 ..................... 2 .....................
by yaqiang.jiang
Tue Sep 14, 2010 4:15 am
Forum: Framework
Topic: how to apply dynamic ElementalLoad on a 2d rectangular plane
Replies: 0
Views: 1770

how to apply dynamic ElementalLoad on a 2d rectangular plane

Dear All and Frank, It seems I have a tricky problem and badly need your help. Assume we use 4 node quadrilateral element. The distributed load information is read from an input file with the following format: time x y load 1 0 0 500 1 0 0.5 250 1 0 1 600 1 ..................... 2 .....................
by yaqiang.jiang
Mon Sep 06, 2010 9:38 am
Forum: Framework
Topic: 'knows-a' and 'has-a' in OpenSees
Replies: 1
Views: 2442

'knows-a' and 'has-a' in OpenSees

Dear Frank and all, I know the above relationships have different semantic meanings; however I can't find obvious differences in the implementation with C++. Take the Analysis object for instance, it knows a Domain object and has an AnalysisModel object, an Integrator object, etc. But in Analysis cl...
by yaqiang.jiang
Mon Aug 30, 2010 12:41 am
Forum: Framework
Topic: Constructors of Domain
Replies: 4
Views: 4394

[quote="fmk"]the others are for people experimenting with data structures and determing the best container object for their particaular situation .. it also allow me to test new container objects.[/quote]

Hi Frank,I really appreciate your reply.
by yaqiang.jiang
Sat Aug 21, 2010 11:03 am
Forum: Framework
Topic: Constructors of Domain
Replies: 4
Views: 4394

[quote="fmk"]pick the first.[/quote]
Hi Frank,
Thanks for your reply.But I'm still interested to know the usages for the other three constructors.Could you please give me more details? :)
by yaqiang.jiang
Wed Aug 18, 2010 2:30 pm
Forum: Framework
Topic: Constructors of Domain
Replies: 4
Views: 4394

Constructors of Domain

Dear Frank, I found there are four constructors for the Domain class,but I don't know which one I should use under a specific situation.Could you please specify the design purpose for each of the four constructors respectively? Bunch of thanks in advance : ) (1)Domain(); (2)Domain(int numNodes, int ...