Dynamic critical loads

This study focuses on experimental testing and subsequent numerical analysis of impacted and pre-loaded composite coupons and bonded composite scarf joints under varying impact conditions. A methodology will be developed for the numerical modelling of preloaded impact tests to enable capture of critical failure modes and ultimate failure. The main aim is to validate a modelling strategy that will provide accurate failure characterisation of the tested joints using numerical analysis.

185p runthenight05 01-03-2023 3 2   Download

In this paper we develop and study an archetypal model to explore the nonlinear dynamic interactions between galloping at an incipient sub-critical Hopf bifurcation of a structure with shelllike buckling behaviour that is gravity-loaded to approach a sub-critical pitch-fork bifurcation.

8p guernsey 28-12-2021 7 0   Download

This paper is concerned with the nonlinear dynamic buckling of sandwich functionally graded circular cylinder shells filled with fluid. Governing equations are derived using the classical shell theory and the geometrical nonlinearity in von Karman–Donnell sense is taken into account. Solutions of the problem are established by using Galerkin’s method and Runge–Kutta method. Effects of thermal environment, geometric parameters, volume fraction index k and fluid on dynamic critical loads of shells are investigated.

14p nguaconbaynhay11 07-04-2021 17 1   Download

Using the finite element method (FEM) and construction calculation program in Matlab, the authors analyzed the elastic stability of piezoelectric composite plates under dynamic in-plane loads, taking into account damping properties of the structure. Critical loads and other factors affecting the stability of the plate are investigated.

15p thienthanquydu 19-10-2018 36 0   Download

The non-linear transient responses of cylindrical and doubly-curved shallow shells subjected to excited external forces are obtained and the dynamic critical buckling loads are evaluated based on the displacement responses using the criterion suggested by Budiansky and Roth. Obtained results show the essential influence of characteristics of functionally graded materials on the dynamical behaviors of shells.

14p thienthanquydu 17-10-2018 33 0   Download

I. Introduction An important aspect of nuclear reactor core analysis involves the determination of the optimal coolant flow distribution and pressure drop across the reactor core. On the one hand, higher coolant flow rates will lead to better heat transfer coefficients and higher Critical Heat Flux (CHF) limits. On the other hand, higher flows rates will also in large pressure drops across the reactor core, hence larger required pumping powers and larger dynamic loads on the core components.

259p giotletinh_hd2009 20-04-2013 89 18   Download

These controls begin with connection management—the ability to multiplex thousands of connected users while minimizing connection resources and load on the system. Next are user-based resource queues, which perform “admission control” and manage the flow of queries into the system based on administrator policies. Finally, Greenplum’s Dynamic Query Prioritization technology gives administrators full control of runtime query prioritization and ensures that all queries get their appropriate share of system resources.

17p yasuyidol 02-04-2013 56 3   Download

Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Critical Care giúp cho các bạn có thêm kiến thức về ngành y học đề tài: Dynamic arterial elastance to predict arterial pressure response to volume loading in preload-dependent patients...

9p thulanh18 05-11-2011 51 1   Download

CHAPTER 13 STRENGTH UNDER DYNAMIC CONDITIONS Charles R. Mischke, Ph.D., RE. Professor Emeritus of Mechanical Engineering Iowa State University Ames, Iowa 13.1 TESTING METHODS AND PRESENTATION OF RESULTS / 13.3 13.2 SN DIAGRAM FOR SINUSOIDAL AND RANDOM LOADING / 13.7 13.3 FATIGUE-STRENGTH MODIFICATION FACTORS / 13.9 13.4 FLUCTUATING STRESS / 13.24 13.5 COMPLICATED STRESS-VARIATION PATTERNS / 13.29 13.6 STRENGTH AT CRITICAL LOCATIONS / 13.31 13.7 COMBINED LOADING / 13.36 13.8 SURFACE FATIGUE / 13.41 REFERENCES / 13.44 RECOMMENDED READING / 13.

45p hadalabo 29-09-2010 59 7   Download