Intro1_M11_structural

Intro1_M11_structural - Structural Analysis Chapter 11...

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Unformatted text preview: Structural Analysis Chapter 11 February 7, 2006 Inventory #002268 11-2 INTRODUCTION TO ANSYS INTRODUCTION TO ANSYS INTRODUCTION TO ANSYS - Part 1 Part 1 Part 1 Training Manual • In this chapter, we will describe the specifics of a structural analysis. • The purpose is two-fold: – To reiterate the general analysis procedure. – To introduce you to structural loads and boundary conditions Chapter 11 – Structural Analysis Overview February 7, 2006 Inventory #002268 11-3 INTRODUCTION TO ANSYS INTRODUCTION TO ANSYS INTRODUCTION TO ANSYS - Part 1 Part 1 Part 1 Training Manual Geometry • Can either be created within ANSYS or imported . • Include details to improve results: – Goal is to sufficiently model the stiffness of the structure – Add details to avoid stress singularities (e.g. fillets) – Exclude details not in region of interest (e.g. exclude small holes) – Add details to improve boundary conditions (e.g. apply pressure to an area rather than using concentrated load) Chapter 11 – A. Preprocessing Geometry February 7, 2006 Inventory #002268 11-4 INTRODUCTION TO ANSYS INTRODUCTION TO ANSYS INTRODUCTION TO ANSYS - Part 1 Part 1 Part 1 Training Manual • Element type • The table below shows commonly used structural element types. • The nodal DOF’s may include: UX, UY, UZ, ROTX, ROTY, and ROTZ. Commonly used structural element types Chapter 11 – A. Preprocessing Meshing • Material properties – Minimum requirement is Young’s Modulus, EX. If Poisson’s Ratio is not entered a default of 0.3 will be assumed. – Setting preferences to “Structural” limits the Material Model GUI to display only structural properties. • Real constants and Section properties – Primarily needed for shell and line elements. 2-D Solid 3-D Solid 3-D Shell Line Elements Linear PLANE42 SOLID45 SHELL63 BEAM3 PLANE182 SOLID185 SHELL181 BEAM4 BEAM188 Quadratic PLANE2 SOLID95 SHELL93 BEAM189 PLANE82 SOLID92 PLANE183 SOLID186 February 7, 2006 Inventory #002268 11-5 INTRODUCTION TO ANSYS INTRODUCTION TO ANSYS INTRODUCTION TO ANSYS - Part 1 Part 1 Part 1 Training Manual • Structural loading conditions can be: DOF Constraints Regions of the model where displacements are known. Concentrated Forces External forces that can be simplified as a point load. Pressures Surfaces where forces on an area are known. Uniform Temperature Temperatures applied as a body force used with a reference temperature to predict thermal strains. Gravity Accelerations applied as inertia boundary conditions Chapter 11 – B. Solution Define Loads February 7, 2006 Inventory #002268 11-6 INTRODUCTION TO ANSYS INTRODUCTION TO ANSYS INTRODUCTION TO ANSYS - Part 1 Part 1 Part 1 Training Manual Displacement Constraints • Used to specify where the model is fixed (zero displacement locations)....
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This note was uploaded on 12/10/2009 for the course ME master taught by Professor Mon during the Spring '09 term at Hanyang University.

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Intro1_M11_structural - Structural Analysis Chapter 11...

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