optpack

A collection of Fortran 2003, 90 and 77 routines, modules and programs for automatic simulation based global constrained optimisation. The initial application is for FE simulation of elasto-plastic buckling of steel rods aimed at tuning the hardening model. Unix shell scripts are used extensively. High concurrency is achieved with parallel multi-start global search and with parallel MPI FE. Powell's BOBYQA or LINCOA are used (not included in this package). Automatic mesh generation of 3D cylinders is provided + automatic boundary conditions, all via Fortran and shell scripting.

Features

Fortran
the Abaqus
Unix shell
hierarchical parallelisation
MPI

Project Samples

Circle mesh obtained by conformal mapping of a square

Bucking of 20mm diameter rod in 1st mode

Bucking of 20mm diameter rod in higher mode

Initial mesh for buckling of a short rod with small inital perturbation based on the 1st eigenvector

Deformed mesh for a short rod after buckling. Note high plastic strains near constrains

single starting point optimisation workflow

Project Activity

See All Activity >

License

BSD License

Follow optpack

optpack Web Site

Other Useful Business Software

Gen AI apps are built with MongoDB Atlas

The database for AI-powered applications.

MongoDB Atlas is the developer-friendly database used to build, scale, and run gen AI and LLM-powered apps—without needing a separate vector database. Atlas offers built-in vector search, global availability across 115+ regions, and flexible document modeling. Start building AI apps faster, all in one place.

Start Free

Rate This Project

User Reviews

Be the first to post a review of optpack!

Additional Project Details

Operating Systems

Linux

Intended Audience

Advanced End Users, Aerospace, Automotive, End Users/Desktop, Engineering, Science/Research

User Interface

Command-line, Console/Terminal

Programming Language

Fortran, Unix Shell

Related Categories

Unix Shell UML Tool, Unix Shell Simulation Software, Unix Shell Mechanical and Civil Engineering Software, Fortran UML Tool, Fortran Simulation Software, Fortran Mechanical and Civil Engineering Software

Registered

2015-12-23

Similar Business Software

MPI for Python (mpi4py)

Over the last years, high performance computing has become an affordable resource to many more researchers in the scientific community than ever before. The conjunction of quality open source software and commodity hardware strongly influenced the now widespread popularity of Beowulf class...

See Software
Innoslate

SPEC Innovations’ flagship model-based systems engineering solution can help your team reduce time-to-market, cost, and risk on even some of the most complex systems. This cloud or on-premise application uses a modern web browser, with an intuitive graphical user interface. Innoslate’s full...

See Software
AddSearch

AddSearch goes beyond traditional site search with AI Answers and AI Conversations, enabling businesses to deliver direct, conversational, and context-aware responses. Combined with lightning-fast search and smart recommendations, AddSearch helps organizations create personalized, engaging...

See Software
Boozang

Build. Test. Automate. Empower your whole team to build and maintain automated tests, not just developers. Meet your testing demands fast. Get full test coverage in days, not months. Our natural-language tests are extremely stable to code changes. When tests break our AI will repair it in...

See Software
Bitrise

Bitrise is a CI/CD platform built for mobile development, helping teams speed up builds, automate testing, and deliver high-quality apps faster. It supports native languages like Swift, Objective-C, Java, and Kotlin, as well as cross-platform frameworks including React Native, Flutter, Xamarin,...

See Software
Adobe PDF Library SDK

Developers rely on Datalogics to provide the most comprehensive PDF SDKs in the industry. Global OEMs, SaaS and enterprise end-users rely on Adobe PDF Library to automate the creation, editing and management of PDFs. An Adobe partner, our SDK uses the same source code as Acrobat for...

See Software