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…ability - Document `integrator ExplicitBathe $p <$computeCriticalDt> <-lnvd $alpha>`: options in any order after p, any integer > 0 enables the critical time step report, invalid -lnvd values or unknown options are warned and ignored. - -lnvd: Cundall local non-viscous damping on the solved sub-step accelerations (equivalent to F_d = -alpha |F| sign(v) for a lumped mass), for pseudo-static analyses; works with parallel diagonal systems; lumped-mass limitation; see also ExplicitDifferenceStatic. - The command is Tcl-only: remove the Python example. Fix the |int| substitution, the csv-table width error and the unreferenced [Noh2013] citation. - Two verified, downloadable examples: SDOF amplitude decay vs alpha and a pseudo-static chain converging to the exact static solution. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01K524skQQ24A6JCFWNnb7G1
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01K524skQQ24A6JCFWNnb7G1
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Branch:
jaabell:feat/explicit-bathe-lnvd→OpenSees/OpenSeesDocumentation:masterCode PR: OpenSees/OpenSees#1832
Updates the
ExplicitBathepage for the code PR above:integrator ExplicitBathe $p <$computeCriticalDt> <-lnvd $alpha>: options in any order after p, andany integer > 0 enables the critical-time-step report.
-lnvdoption: Cundall local non-viscous damping for pseudo-static analyses, applied to the solvedsub-step accelerations (equivalent to F_d = −α|F| sign(v) for a lumped mass), with its limitations and a
see-also to ExplicitDifferenceStatic.
|int|substitution, the csv-table width error and the unreferenced[Noh2013]citation (theexisting page produced one error and one warning in Sphinx).
analysis/codeExample/:example_bathe_lnvd_sdof_decay.tcl: decay ratio within 0.04 % of exp(−2α) for α = 0.1;example_bathe_lnvd_pseudostatic.tcl: converges to the exact static solution.Builds with Sphinx with no warnings from the changed files.
🤖 Generated with Claude Code
https://claude.ai/code/session_01K524skQQ24A6JCFWNnb7G1