Stiffness Optimization of Delta Robots

2020 ◽  
pp. 396-404
Author(s):  
Christian Mirz ◽  
Olaf Uzsynski ◽  
Jorge Angeles ◽  
Yukio Takeda ◽  
Burkhard Corves
Keyword(s):  
Stiffness Optimization

Bidirectional evolutionary method for stiffness optimization

AIAA Journal ◽  
1999 ◽  
Vol 37 ◽  
pp. 1483-1488 ◽  
Author(s):  
X. Y. Yang ◽  
Y. M. Xie ◽  
G. P. Steven ◽  
O. M. Querin
Keyword(s):  
Stiffness Optimization ◽  
Evolutionary Method

Design rules for timber log reciprocal floors, based on mass optimization under stiffness constraint

2021 ◽  
pp. 095605992110416
Author(s):  
Pierre Latteur ◽  
Julien Geno ◽  
Marie Vandamme
Keyword(s):  
Parametric Design ◽  
Optimization Method ◽  
Equilibrium Equations ◽  
Design Rules ◽  
Stiffness Optimization ◽  
Structural Relevance ◽  
Reciprocal Structures ◽  
General Mass ◽  
The One ◽  
Robotic Tools

Building with raw timber allows to reduce the price of construction and to make it more competitive with respect to concrete or steel construction. For a few years now, the combination of parametric design and robotic tools make possible the fast and precise milling of timber logs for their accurate connection. However, the spans are quickly limited by the logs length. In this context, reciprocal structures are relevant, since they allow to build large spans structures with short beams. Finally, the architectural interest of reciprocal structures is not to prove. However, the choice of the most efficient reciprocal frame, as well as its structural relevance in terms of mass and stiffness is, most of the time, ruled by subjective considerations. This paper focuses on rectangular floors composed of reciprocal moduli and has three objectives: (1) to develop a general mass and stiffness optimization method for reciprocal floors, which is not only necessary to limit the price, but also to reduce their thickness, (2) to define design rules for reciprocal floors, in particular for the choice of the best engagement ratio, and (3) to compare the structural efficiency of reciprocal floors with the one of “traditional” floors with parallel logs. Coming from a dimensionless transformation of the equilibrium equations, the results of this article will thus give the designers keys to better design reciprocal structures, evaluate their structural performances and relevance, and justify their choices.

Stiffness optimization of two-axis flexible supporting platform for fast steering mirror

2015 ◽  
Vol 23 (12) ◽  
pp. 3378-3386
Author(s):  
付锦江 FU Jin-jiang ◽  
颜昌翔 YAN Chang-xiang ◽  
刘伟 LIU Wei ◽  
袁婷 YUAN Ting
Keyword(s):  
Stiffness Optimization

Strength and Stiffness Optimization of Heavy-Duty Gear

2013 ◽  
Vol 712-715 ◽  
pp. 1701-1704
Author(s):  
Li Yang
Keyword(s):  
Light Weight ◽  
Heavy Duty ◽  
Body Form ◽  
Structure Characteristics ◽  
Frequency Adjustment ◽  
Stiffness Optimization ◽  
Before And After ◽  
Strength And Stiffness

In this paper, a kind of advanced gear body form is proposed, which has the structure characteristics of no weight reducing whole, thin spoke platesthick rim and large fillet. The optimization effect is confirmated by comparative analyzing the structure before and after optimization on strengthstiffnessweight and frequency adjustment performance of gear. The results show that the kind of optimization gear body is suitable for application in aviation, for which has the features of high strengthgood stiffness and light weight and which is easy to adjust gear frequency.

A Stiffness Optimization Procedure for Automobile Rubber Mounts

2001 ◽  
Author(s):  
Nobutaka Tsujiuchi ◽  
Takayuki Koizumi ◽  
Takaaki Takenaka ◽  
Tomoyuki Iwagase
Keyword(s):  
Optimization Procedure ◽  
Stiffness Optimization

scholarly journals Stiffness optimization of geometrically nonlinear structures and the level set based solution

2016 ◽  
Vol 7 ◽  
pp. A3 ◽  
Author(s):  
Qi Xia ◽  
Tielin Shi
Keyword(s):  
Topology Optimization ◽  
Level Set ◽  
Optimization Problem ◽  
Two Dimensions ◽  
Geometrically Nonlinear ◽  
Nonlinear Structures ◽  
Element Analysis ◽  
Topology Optimization Problem ◽  
Stiffness Optimization ◽  
Ks Function

Load-normalized strain energy increments between consecutive load steps are aggregated through the Kreisselmeier-Steinhauser (KS) function, and the KS function is proposed as a stiffness criterion of geometrically nonlinear structures. A topology optimization problem is defined to minimize the KS function together with the perimeter of structure and a volume constraint. The finite element analysis is done by remeshing, and artificial weak material is not used. The topology optimization problem is solved by using the level set method. Several numerical examples in two dimensions are provided. Other criteria of stiffness, i.e., the end compliance and the complementary work, are compared.

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