We think you have liked this presentation. If you wish to download it, please recommend it to your friends in any social system. Share buttons are a little bit lower. Thank you!
Presentation is loading. Please wait.
Published byDeshawn Barden
Modified about 1 year ago
Finite Element Specialists and Engineering Consultants Angus Ramsay – Director Edward Maunder - Consultant
Complementary Technology Copyright © Ramsay Maunder Associates Limited (2004 – 2015). All Rights Reserved Statically Admissible Moment Field Hillerborg - Design Kinematically Admissible Collapse Mechanism Johansen - Assessment Verification – Simulation Governance
Copyright © Ramsay Maunder Associates Limited (2004 – 2015). All Rights Reserved Strength Criterion EFE – How it Works Load Factor Hyperstatic MomentsParticular Moments Variables
Copyright © Ramsay Maunder Associates Limited (2004 – 2015). All Rights Reserved Making the Most of Your Structure
Copyright © Ramsay Maunder Associates Limited (2004 – 2015). All Rights Reserved Flat Slab on Regular Array of Columns
Copyright © Ramsay Maunder Associates Limited (2004 – 2015). All Rights Reserved Irregular Flat Slab on Blade Columns
Copyright © Ramsay Maunder Associates Limited (2004 – 2015). All Rights Reserved A future EFE plugin could include: Metallic plates, Elastic analysis, Transverse shear force fields, Design optimisation based on design variables as well as statical variables, Shakedown, Limited ductility in RC slabs, Membrane actions and the effects of large deflections. EFE as a Plugin to SLAB Initial EFE plugin to use SLAB’s yield lines to delineate an initial mesh for EFE and we are confident of obtaining very close bounds to the collapse load (1% in 1 Second).
Copyright © Ramsay Maunder Associates Limited (2004 – 2015). All Rights Reserved The fib Model Code for Concrete Structures 2010 allows the use of the theory of plasticity in design, and this includes the “lower bound (static) theorem” (clause ). However the Code appears to keep very quiet concerning the mechanics of using this theorem! Verification of designs may be assisted by numerical simulations, including the finite element method (clause ). This clause warns that “In the case of the most widely used stiffness method, the shape of the displacement field is assumed and equilibrium is satisfied only in integral sense. The internal stresses are lower, compared with an exact solution. The approximations introduced by the finite element formulation only, can be a significant source of errors in numerical analysis”. NB: in the lower bound plug-in, the finite element method that is used assumes fields of stresses, instead of displacements, which satisfy equilibrium exactly. Hence a source of error found in the conventional finite element method is removed. EFE - Admissible with Design Codes!
Copyright © Ramsay Maunder Associates Limited (2004 – 2015). All Rights Reserved Stress Resultant Trajectories a) Column head (elastic) b) Tapered cantilever (elastic) c) Fox Problem (plastic) Helps to identify load paths and thus where to place reinforcement.
Copyright © Ramsay Maunder Associates Limited (2004 – 2015). All Rights Reserved Thank you for listening! Finite Element Specialists and Engineering Consultants
Equilibrium Finite Elements for the Safe Limit Analysis of Plates Angus Ramsay Ramsay Maunder Associates Limited.
University of Sheffield, 7 th September 2009 Angus Ramsay & Edward Maunder.
SDC PUBLICATIONS © 2012 Chapter 17 Design Analysis using Inventor Stress Analysis Module Objectives: Create Simulation Study Apply Fixtures and Loads Perform.
Department of Civil and Environmental Engineering, The University of Melbourne Finite Element Modelling Applications (Notes prepared by A. Hira – modified.
LECTURE SERIES on STRUCTURAL OPTIMIZATION Thanh X. Nguyen Structural Mechanics Division National University of Civil Engineering
12- 2-D Problems Dr. Ahmet Zafer Şenalp Mechanical Engineering Department Gebze Technical University.
Element and global stiffness matrices – Analysis of continuous beams – Co-ordinate transformations – Rotation matrix – Transformations of stiffness matrices,
Lecture 33 - Design of Two-Way Floor Slab System April 10, 2001 CVEN 444.
School of Civil EngineeringSpring 2007 CE 595: Finite Elements in Elasticity Instructors: Amit Varma, Ph.D. Timothy M. Whalen, Ph.D.
Subgrade Models for Rigid Pavements. Development of theories for analyzing rigid pavements include the choice of a subgrade model. When the chosen model.
Wind turbine blade design using FEM AFOLABI AKINGBE WEI CHENG WENYU ZHOU.
By Reza Barati Under Guidance of Prof. G. Heidarinejad Continuum Mechanics University of Tarbiat Modares Dec, In The.
Point-wise Discretization Errors in Boundary Element Method for Elasticity Problem Bart F. Zalewski Case Western Reserve University Robert L. Mullen Case.
INTRODUCTION INTO FINITE ELEMENT NONLINEAR ANALYSES Doc. Ing. Vladimír Ivančo, PhD. Technical University of Košice Faculty of Mechanical Engineering Department.
Prismatic Bar Subjected to End Loadings Semi-Inverse Method Elasticity Theory, Applications and Numerics M.H. Sadd, University of Rhode Island.
Beams and Frames. u beam theory can be used to solve simple beams u complex beams with many cross section changes are solvable but lengthy u many 2-d.
1.033/1.57 Mechanics of Material Systems (Mechanics and Durability of Solids I) Franz-Josef Ulm Lecture: MWF1 // Recitation: F 3:00-4: /1.57 Mechanics.
Practical Application of Finite Element Analysis to the Design of Post-Tensioned and Reinforced Concrete Floors Jonathan Hirsch, P.E.
MEG 361 CAD Dr. Mostafa S. Hbib Finite Element Method.
ECIV 720 A Advanced Structural Mechanics and Analysis Lecture 7: Formulation Techniques: Variational Methods The Principle of Minimum Potential Energy.
A PPLIED M ECHANICS Lecture 10 Slovak University of Technology Faculty of Material Science and Technology in Trnava.
2D Analyses Mesh Refinement Structural Mechanics Displacement-based Formulations.
THE USE OF YIELD LINE ANALYSIS AND PANEL TESTS FOR THE DESIGN OF SHOTCRETE by WC JOUGHIN * and GC HOWELL ** SRK Consulting, Johannesburg * Principal Mining.
MCE 561 Computational Methods in Solid Mechanics Introduction.
Basic FEA Concepts. FEA Project Outline Consider the physics of the situation. Devise a mathematical model. Obtain approximate results for subsequent.
High Rise Design High Rise Design (Notes prepared by A. Hira – modified by N. Haritos) Department of Civil and Environmental Engineering, The University.
MANE 4240 & CIVL 4240 Introduction to Finite Elements Principles of minimum potential energy and Rayleigh-Ritz Prof. Suvranu De.
Matrix Methods (Notes Only) MAE 316 – Strength of Mechanical Components NC State University Department of Mechanical and Aerospace Engineering Matrix Methods1.
Outline Lesson 1. Introduction to ANSYS Lesson 2. Basics Lesson 3. Solution phases Lesson 4. Modeling Lesson 5. Material Lesson 6. Loading Lesson 7. Solution.
U N I V E R S I T Y o f L i è g e Stress constrained optimization using X-FEM and Level Set Description L. Van Miegroet, T. Jacobs E. Lemaire and P. Duysinx.
Copyright © 2002J. E. Akin Rice University, MEMS Dept. CAD and Finite Element Analysis Most ME CAD applications require a FEA in one or more areas: –Stress.
CAD and Finite Element Analysis Most ME CAD applications require a FEA in one or more areas: –Stress Analysis –Thermal Analysis –Structural Dynamics –Computational.
1 CHAP 8 STRUCTURAL DESIGN USING FINITE ELEMENTS FINITE ELEMENT ANALYSIS AND DESIGN Nam-Ho Kim Edited and audio Raphael Haftka.
Structural Design. Introduction It is necessary to evaluate the structural reliability of a proposed design to ensure that the product will perform adequately.
Copyright 2001, J.E. Akin. All rights reserved. CAD and Finite Element Analysis Most ME CAD applications require a FEA in one or more areas: –Stress Analysis.
Results Verification Has the model been correctly implemented?
MANE 4240 & CIVL 4240 Introduction to Finite Elements Shape functions in 1D Prof. Suvranu De.
Motion and Stress Analysis by Vector Mechanics Edward C. Ting Professor Emeritus of Applied Mechanics Purdue University, West Lafayette, IN National Central.
III Solution of pde’s using variational principles Introduction Euler-Lagrange equations Method of Ritz for minimising functionals Weighted residual methods.
By Dr. Attaullah Shah Swedish College of Engineering and Technology Wah Cantt. Reinforced Concrete Design-8 Design of 2 way Slabs.
© 2011 Autodesk Freely licensed for use by educational institutions. Reuse and changes require a note indicating that content has been modified from the.
Eng Ship Structures 1 An introduction to the finite element method using MATLAB.
1 Finite Element Analysis. 2 What is FEA ? The FEA method gives an approximate solution for certain problems in engineering and science It is mainly used.
Statics, Fourteenth Edition R.C. Hibbeler Copyright ©2016 by Pearson Education, Inc. All rights reserved. In-Class Activities: Check Homework, if any Reading.
Seismic Performance Assessment of Flat Plate Floor Systems John W. Wallace, Ph.D., P.E. Thomas Hyun-Koo Kang, Ph.D. Student Department of Civil and Environmental.
Beam Elements Jake Blanchard Spring Beam Elements These are “Line Elements,” with ◦ 2 nodes ◦ 6 DOF per node (3 translations and 3 rotations) ◦
Reinforcement for Plates Course CT4150 Lecture12 5 Jan
ANALYSIS OF TWO-WAY SLABS WITH BEAMS 1. In this lecture the moments are determined by the direct design method for an exterior panel of a two-way slab.
8/17/20151 The Finite Element Method General Overview.
© 2017 SlidePlayer.com Inc. All rights reserved.