Tech ME 140 Unit 5 Lecture Mechanism Design Introduction

Tech/ME 140: Unit 5 Lecture Mechanism Design: Introduction to Mechanisms, Synthesis Using Graphical Approach. Motion Analysis and Simulation: Animation and Articulation

Mechanism Defined • A system of parts working together in a machine. • A piece of machinery. • An assembly of moving parts performing a complete functional motion, often being part of a large machine. • Linkage.

Mechanism Design

Mechanism Design with Labels

Two Ways of Achieving Synthesis of Mechanism • Rational Synthesis: – Consists of standard synthesis techniques developed by kinematicians. – These techniques can be automated using computer programs. – Limitation is that it is applicable only to some specific types of mechanisms. • Informal Synthesis or Iteration: – Involves a guess of dimensions of mechanism members. – Then checking the resultant performance by analysis. – The dimensions are modified to obtain desired results.

Solid. Works Simulation http: //www. youtube. com/watch? feature=play er_embedded&v=V 5 n. KOTr. Dw 5 U

Solid. Works Simulation • Solid. Works Simulation provides core simulation tools to test your designs and make the decisions to improve quality. • This eliminates the redundant tasks required with traditional analysis tools. • Component materials, connections, and relationships defined during design development are fully understood for simulation. • Products can be tested for strength and safety.

Solid. Works Simulation http: //www. solidworks. com/sw/products/simu lation/simulation. htm

Solid. Works Motion Analysis • Solid. Works motion analysis uses the assembly mates along with part contacts and a robust physics-based solver to accurately determine the physical movements of an assembly under load. • With the assembly motion and forces calculated, a structural analysis of the components can be performed to ensure product performance.

Solid. Works Motion Analysis • Conduct detailed motion analysis and evaluate the mechanical performance of your design using: – CAD-embedded Solid. Works Simulation – Solid. Works Motion, and – Finite element analysis (FEA).

Solid. Works Motion Analysis • A Motion Analysis study combines motion study elements with mates in motion calculations. • Motion constraints, material properties, mass, and component contact are included in the Solid. Works Motion kinematic solver calculations. • A Motion Analysis study also calculates loads that can be used to define load cases for structural analyses.

Solid. Works Motion Analysis • You can use Motion Analysis to accurately simulate and analyze the motion of an assembly while incorporating the effects of Motion Study elements such as: – Forces – Springs – Dampers – Friction

Solid. Works Motion Analysis • To use the Solid. Works Motion solver in a motion study, select Motion Analysis from the motion studies type list in the Motion. Manager

Applications of Simulation

Applications of Simulation Solid. Works Simulation. Xpress

Solid. Works Motion Study http: //www. youtube. com/watch? v=6 BYYn 60 9 Yz. Y

Steps in Solid. Works Simulation