A Study of Inertia Relief Analysis

  title={A Study of Inertia Relief Analysis},
  author={Lin Liao},
  • Lin Liao
  • Published 4 April 2011
  • Engineering
[Abstract] Inertia relief analysis is regarded as an effective technique for the modeling of unconstrained structural systems. In this paper the principle of inertia relief analysis is first described. Inertia relief capability of commercial finite element packages is discussed. The paper studies the implementation of inertia relief techniques into finite element analysis of a variety of structures. Two types of inertia relief methods of MSC/NASTRAN (conventional inertia relief and automatic… Expand
Topology optimization of freely floating elastic continua using the inertia relief method
Numerical examples show that all three methods for suppressing rigid body motion work, and indicate that optimal designs for freely floating structures undergoing rigid acceleration can differ significantly from designs optimized under static conditions. Expand
Numerical Calculation of Effect of Elastic Deformation on Aerodynamic Characteristics of a Rocket
The application and workflow of Computational Fluid Dynamics (CFD)/Computational Structure Dynamics (CSD) on solving the static aeroelastic problem of a slender rocket are introduced. To predictExpand
Inertial relief technique based analysis of the three-wheeler E-vehicle chassis
Inertia relief methodology is adopted to analyse the unconstrained chassis of the three-wheeled “electric” vehicle using FEM in the ANSYS® 15.0 workbench tool. Expand
Structure Optimization of Vibrating Feeder Based on Inertia Release
Reliability is a key factor in the design and manufacture of vibrating feeders. In this paper, a method considering materials force was proposed to optimize the structure of the vibrating feeder.Expand
Nonintrusive reduced order model for parametric solutions of inertia relief problems
The main goal of this work is to develop a computational framework for the solution of unconstrained parametric structural problems with IR and the Proper Generalized Decomposition (PGD) method, which is nonintrusive and possible to be integrated with commercial FE packages. Expand
Solar sail structural analysis via improved finite element modeling
The proposed approach is able to circumvent the onset of numerical convergence problems by means of suitable strategies, and the vibration global mode shapes and frequencies of the solar sail are correctly described even in presence of unsymmetrical loading conditions. Expand
Crash Optimization of an Automobile Frontal Structure Using Equivalent Static Loads
Abstract : Automobile crash optimization is nonlinear dynamic response structural optimization that uses highly nonlinear crash analysis in the time domain. The equivalent static loads (ESLs) methodExpand
On the Evaluation of a Coupled Sequential Approach for Rotorcraft Landing Simulation
A coupled sequential simulation strategy is proposed and experimentally verified, and this approach divides the complex landing problem into two separate domains, namely a dynamic domain, ruled by a multibody model, and a structural domain, which relies on a finite element model (FEM). Expand
Springback prediction and compensation for the third generation of UHSS stamping based on a new kinematic hardening model and inertia relief approach
Ultrahigh-strength steel (UHSS), such as DP980, has been widely used in automotive structural components to further reduce the weight of the autobody and improve the crashworthiness performance.Expand
Semi-analytical method for calculating aeroelastic effect of profiled rod flying at high velocity
Abstract The key technique of a kinetic energy rod (KER) warhead is to control the flight attitude of rods. The rods are usually designed to different shapes. A new conceptual KER named profiled rodExpand


The Use of Inertia Relief to Estimate Impact Loads
In order to perform an inertia relief analysis, an analyst must first select single values to represent the force time histories which are applied to the structure. These forces are then applied to aExpand
Non-Linear Internal Loads Modeling Methods
The current practice at Boeing rotorcraft for determining the distribution of internal forces in aircraft, involves building a finite element model of the aircraft, and applying rotor hub loads,Expand
Nonlinear airship aeroelasticity
Abstract The aeroelastic derivatives for today's aircraft are calculated in the concept phase using a standard procedure. This scheme has to be extended for large airships, due to variousExpand
Parametric Studies of Square Solar Sails Using Finite Element Analysis
Parametric studies are performed on two generic square solar sail designs to identify parameters of interest. The studies are performed on systems-level models of full-scale solar sails, and includeExpand
Nonlinear Static and Multi-axial Fatigue Analysis of Automotive Lower Control Arm Using NEiNASTRAN
  • MSC/NASTRAN Reference Manual
  • 2005