A kinematic stability repair algorithm for planar truss topology via geometric decomposition

2021 ◽  
Vol 244 ◽  
pp. 106428
Author(s):  
Hakan Ozbasaran
Keyword(s):  
Truss Topology ◽  
Geometric Decomposition

An Improved Shape Annealing Method for Truss Topology Generation

1994 ◽  
Author(s):  
Giridhar Reddy ◽  
Jonathan Cagan
Keyword(s):  
Simulated Annealing ◽  
Optimization Method ◽  
Geometric Constraints ◽  
Truss Structures ◽  
Model Design ◽  
Topology Generation ◽  
Truss Topology ◽  
Gradient Based ◽  
Annealing Algorithm ◽  
Annealing Method

Abstract A method for the design of truss structures which encourages lateral exploration, pushes away from violated spaces, models design intentions, and produces solutions with a wide variety of characteristics is introduced. An improved shape annealing algorithm for truss topology generation and optimization, based on the techniques of shape grammars and simulated annealing, implements the method. The algorithm features a shape grammar to model design intentions, an ability to incorporate geometric constraints to avoid obstacles, and a shape optimization method using only simulated annealing with more consistent convergence characteristics; no traditional gradient-based techniques are employed. The improved algorithm is illustrated on various structural examples generating a variety of solutions based on a simple grammar.

Experimental performance of optimized trusses

2021 ◽  
Author(s):  
Joshua A. Schultz ◽  
Phillip Geist ◽  
Brooke Whitsell ◽  
Rachel Dorr
Keyword(s):  
Point Load ◽  
Experimental Results ◽  
Lateral Torsional Buckling ◽  
Torsional Buckling ◽  
Experimental Performance ◽  
High Rise ◽  
Truss Topology ◽  
Failure Loads ◽  
3D Printed

<p>A series of six 3D printed discretely optimized truss specimens and two warren truss specimens were experimentally loaded until failure. The results were compared to the theoretical failure loads and stresses determined using Maxwell’s Method. Each set of truss specimens were loaded in a simple span condition, with a point load applied at the center of the span. Each truss specimen was configured into pairs in order to prevent lateral torsional buckling (LTB) while testing. Strain, load, and displacement data was gathered for each truss specimen tested. These results were compared to the predicted results calculated by Maxwell’s theorem. Of the 6 specimens tested, all of the trusses failed within 1% - 20% of the analytical vales. The trends in the experimental results support efficacy of previously developed theories of optimized truss topology in order to increase strength and efficiency of lateral systems in high rise structures.</p>

A New Method for Optimal Truss Topology Design

1993 ◽  
Vol 3 (2) ◽  
pp. 322-358 ◽  
Author(s):  
Aharon Ben-Tal ◽  
Martin P. Bendsøe
Keyword(s):  
Topology Design ◽  
New Method ◽  
Truss Topology ◽  
Truss Topology Design
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