Finite, inelastic deformations of clamped shell membranes subjected to impulsive loadings.

AIAA Journal ◽  
1969 ◽  
Vol 7 (2) ◽  
pp. 228-235 ◽  
Author(s):  
CHARLES LINDBERGH ◽  
DONALD E. BOYD
Keyword(s):  
Impulsive Loadings

scholarly journals Particle Jetting Induced by the Impulsive Loadings

2017 ◽  
Author(s):  
Kun Xue ◽  
Xiaoliang Shi ◽  
Kaiyuan Du ◽  
Haoran Cui
Keyword(s):  
Impulsive Loadings ◽  
Particle Jetting

Convergent Approximations of Problems of Impulsively Loaded Structures

1971 ◽  
Vol 38 (4) ◽  
pp. 852-860 ◽  
Author(s):  
H.-S. Ho
Keyword(s):  
Initial Conditions ◽  
Admissible Solution ◽  
Time Dependent ◽  
Strong Discontinuities ◽  
Simple Mode ◽  
Perfectly Plastic ◽  
Initial Difference ◽  
Impulsive Loadings ◽  
Convergent Solution ◽  
General Time

For a dynamically loaded system made of stable materials, it is found that a dynamically admissible solution, one that satisfies all but the initial conditions, is a definitely convergent solution in time, with geometry changes and discontinuities taken into account. A new and simpler definition for weak and strong discontinuities is proposed. Solutions using simple mode approximations or the more general time-dependent changing mode approximations are described. For rigid, perfectly plastic beams under impulsive loadings, the latter method indeed gives better results, as there are more parameters available to optimize the initial difference energy.

Design analysis of hybrid composite anti-ram bollard subjected to impulsive loadings

2018 ◽  
Vol 189 ◽  
pp. 598-613 ◽  
Author(s):  
Phuong Tran ◽  
Steven Linforth ◽  
Tuan D. Ngo ◽  
Raymond Lumantarna ◽  
Thuy Q. Nguyen
Keyword(s):  
Hybrid Composite ◽  
Design Analysis ◽  
Impulsive Loadings

Impulsive Loadings of Composite Shells

1989 ◽  
Author(s):  
B. L. Kistler ◽  
L. I. Weingarten
Keyword(s):  
Composite Shells ◽  
Impulsive Loadings

Structural Health Assessment After an Impact

2006 ◽  
Author(s):  
Rene Martinez-Flores ◽  
Achintya Haldar ◽  
Hasan Katkhuda
Keyword(s):  
Kalman Filter ◽  
Health Assessment ◽  
Least Square ◽  
Initial State ◽  
Structural Health ◽  
Structural Health Assessment ◽  
Response Information ◽  
University Of Arizona ◽  
The University ◽  
Impulsive Loadings

An innovative technique to assess structural health just after subjected to impulsive loadings (blasts, explosions, etc.) underdevelopment at the University of Arizona was experimentally verified and is presented in this paper. The authors called it the Generalized Iterative Least Square Extended Kalman Filter with Unknown Input (GILS-EKF-UI) method. The system is represented by finite elements and a Kalman filter-based system identification (SI) technique is used to identify the system. Some of the major characteristics of the method are that it does not require information on input excitation and can identify a system with limited noise-contaminated response information measured at few node points. To implement the Kalman-filter based algorithm, the information on the input excitation and the initial state vector must be available. The authors proposed a two-stage approach. In the first stage, based on the limited measured response information available at the locations of the sensors, a substructure is identified. After the completion of the first stage, the input excitation information that caused the responses and the stiffness of all the elements in the substructure can be evaluated. Then, in stage 2, the Kalman-filter based algorithm is used to identify the whole structure. The experimental verification of the method is emphasized in this paper.

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