Erratum: z-Transform Methods for the Optimal Design of One-Dimensional Layered Elastic Media

2010 ◽  
Vol 70 (5) ◽  
pp. 1736-1737
Author(s):  
Ani P. Velo ◽  
George A. Gazonas ◽  
Takanobu Ameya
Keyword(s):  
Optimal Design ◽  
Elastic Media ◽  
Transform Methods ◽  
One Dimensional ◽  
Layered Elastic Media

z-Transform Methods for the Optimal Design of One-Dimensional Layered Elastic Media

2009 ◽  
Vol 70 (3) ◽  
pp. 762-788 ◽  
Author(s):  
Ani P. Velo ◽  
George A. Gazonas ◽  
Takanobu Ameya
Keyword(s):  
Optimal Design ◽  
Elastic Media ◽  
Transform Methods ◽  
One Dimensional ◽  
Layered Elastic Media

Momentum exchange impact damper design methodology for object-wall-collision problems

2017 ◽  
Vol 24 (14) ◽  
pp. 3206-3218
Author(s):  
Yohei Kushida ◽  
Hiroaki Umehara ◽  
Susumu Hara ◽  
Keisuke Yamada
Keyword(s):  
Optimal Design ◽  
Design Methodology ◽  
Design Parameters ◽  
Momentum Exchange ◽  
Impact Damper ◽  
One Dimensional ◽  
Practical Design ◽  
Wall Collision ◽  
Damper Design ◽  
And Control

Momentum exchange impact dampers (MEIDs) were proposed to control the shock responses of mechanical structures. They were applied to reduce floor shock vibrations and control lunar/planetary exploration spacecraft landings. MEIDs are required to control an object’s velocity and displacement, especially for applications involving spacecraft landing. Previous studies verified numerous MEID performances through various types of simulations and experiments. However, previous studies discussing the optimal design methodology for MEIDs are limited. This study explicitly derived the optimal design parameters of MEIDs, which control the controlled object’s displacement and velocity to zero in one-dimensional motion. In addition, the study derived sub-optimal design parameters to control the controlled object’s velocity within a reasonable approximation to derive a practical design methodology for MEIDs. The derived sub-optimal design methodology could also be applied to MEIDs in two-dimensional motion. Furthermore, simulations conducted in the study verified the performances of MEIDs with optimal/sub-optimal design parameters.

The oscillations of layered elastic media with a wavy boundary

2010 ◽  
Vol 74 (6) ◽  
pp. 633-636 ◽  
Author(s):  
V.A. Babeshko ◽  
O.M. Babeshko ◽  
O.V. Yevdokimova
Keyword(s):  
Elastic Media ◽  
Wavy Boundary ◽  
Layered Elastic Media
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