TR111: Integrating AutoCAD with Finite Element Code to Model Underground Construction

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Abstract/Contents

Abstract: The use of AutoCAD 10 allow easy interaction with a 3D nonlinear finite element (FE) excavation code DIG-DIRT written by the PI is presented. DIG-DIRT currently has many advanced features such as the element birth/death option to model the placement/removal of new/old materials, fluid flow option, consolidation with free-surface seepage, nonlinear soil behavior, and geometric nonlinearity options. However, DIG-DIRT has limited input/output capabilities. The current AutoCAD model allows the user to input the problem, run DIG-DIRT, and view the results (displacement, pore pressures, stresses/strains) all from within AutoCAD. The current model also allows the user to view the output results at different time steps during the excavation sequence. This is essential since the process of excavation involves sequential removal of earth materials and installation of new structural members Enhancing DIG-DIRT, by adding a user-friendly interface such as AutoCAD, will make the advanced features accessible to the design and construction community.

Type of resource	text
Date created	January 1998

Author	Lai, Timothy Y.
Author	Borja, Ronaldo I.

Subject	CIFE
Subject	Center for Integrated Facility Engineering
Subject	Stanford University
Subject	Modeling
Subject	3-D
Subject	DIG-DIRT
Genre	Technical report

Location	https://purl.stanford.edu/gm790jd3605

Use and reproduction: User agrees that, where applicable, content will not be used to identify or to otherwise infringe the privacy or confidentiality rights of individuals. Content distributed via the Stanford Digital Repository may be subject to additional license and use restrictions applied by the depositor.

Preferred Citation: Lai, Timothy Y. and Borja, Ronaldo I.. (1998). TR111: Integrating AutoCAD with Finite Element Code to Model Underground Construction. Stanford Digital Repository. Available at: http://purl.stanford.edu/gm790jd3605

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