Analytical design sensitivity derivatives of time and frequency responses as an aid to the design process

2000 ◽  
Vol 23 (1/2) ◽  
pp. 176
Author(s):  
Thomas A. Zeiler ◽  
Mark E. Barkey
Keyword(s):  
Design Process ◽  
Design Sensitivity ◽  
Analytical Design ◽  
Frequency Responses ◽  
Sensitivity Derivatives ◽  
Derivatives Of

scholarly journals Overcoming the Realization Problems of Wideband Matching Circuits

2018 ◽  
pp. 31-36
Author(s):  
Balázs Matolcsy ◽  
Attila Zólomy
Keyword(s):  
Design Process ◽  
Circuit Simulation ◽  
Impedance Matching ◽  
Microwave Circuit ◽  
Design Rules ◽  
Analytical Design ◽  
Calculation Technique ◽  
Matching Networks ◽  
Practical Design

During the analytical design process of wideband impedance matching major problems may arise, that might lead to non-realizable matching networks, preventing the successful impedance matching. In this paper two practical design rules and a simplified equation is presented, supporting the design of physically realizable impedance matching networks. The design rules and calculation technique introduced by this paper is summarized, and validated by microwave circuit simulation examples.

Derivatives of Eigenvalues for Torsional Vibration of Geared Shaft Systems

1993 ◽  
Vol 115 (3) ◽  
pp. 277-279 ◽  
Author(s):  
Liu Zhong-Sheng ◽  
Chen Su-Huan ◽  
Xu Tao
Keyword(s):  
Sensitivity Analysis ◽  
Optimal Design ◽  
Natural Frequency ◽  
Torsional Vibration ◽  
Design Parameter ◽  
Practical Importance ◽  
Design Sensitivity ◽  
Shaft System ◽  
Eigenvalue Derivatives ◽  
Derivatives Of

Design sensitivity analysis of natural frequency for geared shaft systems is of practical importance in the optimal design of these systems. This note provides a simple and easily implemented method to calculate the eigenvalue derivatives of a geared shaft system with respect to a design parameter ν, including gear inertia J, shaft stiffness K, and transmission ratio Q, when the eigensolution is known. An example is given to illustrate the method.

Design Sensitivity Derivatives for Isoparametric Elements As an Integrated Part of Finite Element Analysis

1990 ◽  
Author(s):  
Kenneth W. Zumwalt ◽  
Mohamed E. M. El-Sayed
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Design Sensitivity ◽  
Test Cases ◽  
Element Analysis ◽  
Design Sensitivities ◽  
Sensitivity Derivatives ◽  
The Finite Element Analysis ◽  
Isoparametric Elements

Abstract This paper presents an approach for incorporating design sensitivity calculations into the finite element analysis. The formulation depends on the implicit differentiation approach and requires few additional calculations to obtain the design sensitivity derivatives. The implicit differentiation approach is developed and implemented to calculate the design sensitivities for continuum and structural isoparametric elements. To demonstrate the accuracy and robustness of the developed approach some test cases using different structural and continuum element types are presented.

Optimum sensitivity derivatives of objective functions in nonlinear programming

AIAA Journal ◽  
1983 ◽  
Vol 21 (6) ◽  
pp. 913-915 ◽  
Author(s):  
Jean-Francois M. Barthelemy ◽  
Jaroslaw Sobieszczanski-Sobieski
Keyword(s):  
Nonlinear Programming ◽  
Objective Functions ◽  
Sensitivity Derivatives ◽  
Derivatives Of
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