Structural response synthesis

doi:10.2172/476631

Abstract

The open loop control technique of predicting a conditioned input signal based on a specified output response for a second order system has been analyzed both analytically and numerically to gain a firm understanding of the method. Differences between this method of control and digital closed loop control using pole cancellation were investigated as a follow up to previous experimental work. Application of the technique to diamond turning using a fast tool is also discussed.

Forced structural response using component mode synthesis

Allen, J.J. ; Martinez, D.R. March 1985

This report discusses the effects of omitting constraint modes corresponding to applied loads in systems modeled with component mode synthesis. A method of correcting for the omitted constraint modes is also developed. A free component mode synthesis method is applied to a continuous model of an axial rod-spring system, and the effect of omitted constraint modes on the static, steady-state harmonic, and transient response is studied. The effect of omitted constraint modes on the transient response of an asymmetric beam is presented using the free and fixed component mode synthesis methods implemented in MSC/NASTRAN. A simple pinned truss finite elementmore » model is also studied.« less
Seismic Safety Margins Research Program (Phase I). Project IV. Structural building response; Structural Building Response Review

Healey, J.J. ; Wu, S.T. ; Murga, M. February 1980

As part of the Phase I effort of the Seismic Safety Margins Research Program (SSMRP) being performed by the University of California Lawrence Livermore Laboratory for the US Nuclear Regulatory Commission, the basic objective of Subtask IV.1 (Structural Building Response Review) is to review and summarize current methods and data pertaining to seismic response calculations particularly as they relate to the objectives of the SSMRP. This material forms one component in the development of the overall computational methodology involving state of the art computations including explicit consideration of uncertainty and aimed at ultimately deriving estimates of the probability of radioactivemore »« less
DOI: 10.2172/5627242

Full Text Available
Structural response of an earth penetrator. [Structural response calculation of an earth penetrator using the HONDOV finite element code]

Werne, R.W. November 1976

The structural response of an earth penetrating warhead is calculated using the HONDOV finite element code. The model simulates a Defense Nuclear Agency (DNA) reverse ballistic test in which a sandstone target is propelled at the penetrator with a velocity of 1800 ft/s. The HONDOV model uses ''slide lines'' to partially decouple the interior payload and structural case in an effort to access the effect of impacting surfaces on the overall structural response.
DOI: 10.2172/7237095

Full Text Available
Response of basic structural elements and B-52 structural components to simulated nuclear overpressure. Volume II-program data (basic structural elements). Final report, 1 June 1977-30 September 1979

Syring, R.P. ; Grubb, R.L. September 1979

This document reports on the following: (1) experimental determination of the response of 16 basic structural elements and 7 B-52 components to simulated nuclear overpressure environments (utilizing Sandia Corporation's Thunderpipe Shock Tube), (2) analysis of these test specimens utilizing the NOVA-2 computer program, and (3) correlation of test and analysis results.
Response of basic structural elements and B-52 structural components to simulated nuclear overpressure. Volume I-program description and results (basic structural elements). Final report, 1 June 1977-30 September 1979

Syring, R.P. ; Grubb, R.L. September 1979

This document reports on the following: (1) experimental determination of the response of 16 basic structural elements and 7 B-52 components to simulated nuclear overpressure environments (utilizing Sandia Corporation's Thunderpipe Shock Tube), (2) analysis of these test specimens utilizing the NOVA-2 computer program, and (3) correlation of test and analysis results.

Title: Structural response synthesis

Abstract

Citation Formats

Forced structural response using component mode synthesis

Seismic Safety Margins Research Program (Phase I). Project IV. Structural building response; Structural Building Response Review

Structural response of an earth penetrator. [Structural response calculation of an earth penetrator using the HONDOV finite element code]

Response of basic structural elements and B-52 structural components to simulated nuclear overpressure. Volume II-program data (basic structural elements). Final report, 1 June 1977-30 September 1979

Response of basic structural elements and B-52 structural components to simulated nuclear overpressure. Volume I-program description and results (basic structural elements). Final report, 1 June 1977-30 September 1979