Portal Frame Stability with Nonproportional Loads
An inelastic theoretical study of the effect of various load paths is conducted on the in-plane behavior of an imperfect portal frame with flexible joints. The loading consists of concentrated...
Optimal Shape Design of Columns for Buckling
A procedure for the shape optimization of a column for prescribed buckling load is developed. The procedure uses a new analysis technique that enables the formulation of the optimization...
Optimized Wall Thickness of Shells of Revolution
The aim of this paper was to develop a concept for the design of shells of revolution with different Gaussian curvature using a simplified finite element buckling analysis. A cooling tower...
Manipulation of Shell and Fabric Structure Form
Fabric structures and concrete shells are readily compared because of their curving shapes and the apparent structural derivation of their forms. Every fabric structure includes compression...
Pure Building
This paper outlines the need for building integration in the design of fabric structures by examining the different necessary components and how they fit together. It provides examples...
Original Formulation of the Finite Element Method
Following a brief summary of the 1952 state of the art of structural analysis, the paper describes the circumstances that led to the formulation of the finite element method by members...
Major Advances in Finite Element Model Technology
The evolution of finite elements is traced from the viewpoint of finite element shape functions and element-related techniques. Particular emphasis is placed on the isoparametric element,...
Numerical Methods for Solution of Finite Element Systems
A personal summary of solution methods for the static and dynamic analysis of finite element systems, which have been developed during the past 30 years, will be given. Numerical techniques...
Structural Computing in Engineering Practice
Since its emergence some thirty years ago, finite element technology has penetrated a significant part of the structural engineering profession. It serves as a most graphic illustration...
Extensions of Finite Element Technology for Automated Design
The finite element method, by itself, is an efficient analysis tool with which we can judge the quality of a proposed design. However, by coupling finite element analysis with numerical...
Getting Finite Element Programs to Reason About Their Analysis Assumptions
Despite the spectacular improvements of finite element analysis programs, there has been no corresponding progress in the development of physical modeling and interpretation aids. The...
Analysis of the Non-Planar Response of a Cantilever, with the Aid of Computerized Symbolic Manipulation
The nonlinear differential equations governing the static deformations of a cantilever with a tip mass are formulated and analyzed with the aid of computerized symbolic manipulation. The...
Representation of Strategic Choices in Structural Modeling
A major concern in structural modeling is the proper choice of tools to achieve stated objectives. Problem statements in structural analysis and design are usually made in fairly abstract...
Idealized Models in Engineering Analysis
This paper examines the roles of idealization and discretization in engineering analysis and design. Physical idealizations as commonly used in analysis and design are non-analytic in...
Object-Oriented Design of Finite Element Programs
This paper describes an implementation of the finite element method based on computational abstractions of both mathematical and engineering concepts. In contrast with conventional approaches,...
Experiments on Active Structural Control Under Seismic Loads
Two control systems, an active tendon system and an active mass damper system are selected for study for possible real structural implementation. Presented in this paper are simulation...
Optimal Location of Active Controllers Subjected to Seismic Excitation
In the application of structural control to seismic structures certain locations are advantageous for placement of the actuators. These locations reduce the structure's response...
A Comparison of Performances of Various Frictional Base Isolation Systems
The results of a comparative study of the performances of several frictional base isolation devices including the Sliding-Joint, the French System, and the Resilient-Friction isolators...
Frequency Response Design of Controlled Structures
The installation of optimal control systems has been shown to be effective in reducing the vibration responses of structures. In addition to the effectiveness, there are many factors that...
A Family of Concurrent Algorithms for Transient Finite Element Solutions
We derive a family of methods for solving the equations of motion arising in structural dynamics which makes effective use of the architecture of concurrent computers. The algorithm is...
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