ANSYS

Workbench-Simulation Introduction 11.0

3/8/2007© 2007 ANSYS, Inc. All rights reserved.

Workbench 11.0ANSYS, Inc. Proprietary

Inventory #002419A10-1

ANSYS®

AN INTRODUCTION

by

KUMAR KATTURAJA

GRADUATE ENGINEERING TRAINEE

PRECISION EQUIPMENTS (CHENNAI) PRIVATE LIMITED

FINITE ELEMENT METHOD (FEM)

The finite element method is a computer aided mathematical technique that is used to obtain an approximate numerical solution to the fundamental differential and/or integral equations that predict the response of physical systems to external effects.

Physical Phenomenon

Generalized Mathematical

Model

Simplified Model

Approximate Solution

Engineering Decision

Approval Design

Material Properties

Governing Equation

Field Variable/ dependent variable Primary variable

Cross-sectional property

Independent variable or spatial co-ordinate

E A ( d2u /dx2 ) + A = 0

Mathematical modeling

6

( )( ) [ ( ) - ] 0

d dT xKA x hp T x T

dx dx

ANSYS® – PRODUCT OVERVIEW

ANSYS® is a simulation software enables an organization to confidently predict how their product will operate in real world.

PRODUCTS

Simulation Technology

System & Multiphysics

Electronics

Fluid Dynamics

Structural Analysis

Workflow Technology

ANSYS® Workbench Platform

Geometry Interfaces

High Performance Computing

Simulation Process Computing

Flagship Technology

ANSYS® Fluent

ANSYS® HFSS

ANSYS® Mechanical

ANSYS® Red Hawk

STAGES OF ANALYZING IN ANSYS®

1. Pre-processing

Define key points, lines, areas, volumes, element type & material properties, mesh lines, areas, volume as

2. Solution

Assign loads (point/pressure), constraints (translational & rotational) & solving

3. Post-processing

List of nodal displacements, Element forces & moments, Deflection plots, Stress contour diagram

A composite wall is widely used in cold places to insulate buildings from the cold outside surroundings. It typically consists of insulating material packed inside a wall as shown. The insulating material is usually made of two layers. In this problem, model a section of such a wall and determine the heat flux through the wall. This gives an estimate of the amount of heat that needs to be supplied to maintain the room temperature. Composite wall Thermal Conductivity (K) = 1000W/m K

Insulating Material Thermal Conductivity (K ) = 5 W/m K

Element type 

Real constants 

Material properties 

Beam 3 (2D Elastic) 

Cross sectional area = 100 mm2

Beam height = 10 mmBeam length = 1000 mm 

Elastic modulus E = 2×105 N/mm2

Poisson’s ration = 0.3 

Calculate the maximum value of shear force and bending moment in a transverse loaded beam structure shown using analytical method. And compare the shear force and bending moment diagram using finite element method (FEM). Calculate the maximum value of principal stress (direct + bending stress) in a beam. Also find the maximum deflection in a beam. Given:Analysis type: Static Two Dimensional Analysis

QUESTIONS?