The work in this report is motivated by the performance-based engineering approach advocated by PEER. A comprehensive, object-oriented software framework for finite element sensitivity and reliability analysis is developed. The work builds on the existing software OpenSees. An essential ingredient in finite element reliability analysis is accurate, consistent and efficient computation of respon...

The finite-element software framework OpenSees is extended with parameter updating and response sensitivity capabilities to support client applications such as reliability, optimization, and system identification. Using software design patterns, member properties, applied loadings, and nodal coordinates can be identified and repeatedly updated in order to create customized finite-element model ...

Composite pressure vessels have the characteristics of light weight, corrosion resistance, good sealing, and high reliability, been widely used in military civilian applications. With widespread use composite today, determining how to conduct scientific research correct analysis becomes very important. continuous development computer technology improvement finite element algorithms, numerical c...

Abstract Seismic vulnerability assessment of historical unreinforced masonry (URM) buildings is crucial for the authorities due to high susceptibility URM earthquakes. Open system earthquake engineering simulation (OpenSees) a well-known, powerful, and versatile seismic analysis platform. In lack free graphical user interface (GUI) buildings, Hyperomet was designed bridge gap between n...

By conducting low-reversed cyclic loading tests, this paper explores the load-bearing performance of frame-supported multi-ribbed lightweight wall structures. The finite-element software (OpenSees) is used to simulate the process with the shear wall width (at the frame-supported layer) and different hole opening approaches (for multi-ribbed lightweight walls) as variables. The conclusions refle...