Adjustable linear shock absorber redesign
Download
1 / 46

Adjustable Linear Shock Absorber Redesign - PowerPoint PPT Presentation


  • 97 Views
  • Uploaded on

Adjustable Linear Shock Absorber Redesign. Matt Davis Joe O’Connor Ben Patterson Advisor: Mr. Lobaugh. Agenda. Sponsor Info Contract Details Design Problem Analysis of Competitors Shock Prototype Design Analysis Final Design Analysis. Modern Industries. Founded in 1946

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Adjustable Linear Shock Absorber Redesign' - fia


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Adjustable linear shock absorber redesign

Adjustable Linear Shock Absorber Redesign

Matt Davis

Joe O’Connor

Ben Patterson

Advisor: Mr. Lobaugh


Agenda
Agenda

  • Sponsor Info

  • Contract Details

  • Design Problem

  • Analysis of Competitors Shock

  • Prototype Design Analysis

  • Final Design Analysis


Modern industries
Modern Industries

  • Founded in 1946

    • Herbet S. Sweny

  • Industries Served

    • Machining

    • Heat Treating

    • Materials Research

    • Products Division


Products division
Products Division

  • Currently 7 Shocks

    • None adjustable

    • Custom for each customer

  • Our Project

    • Adjustable linear shock absorber

    • “Catalog Version”


Objective statement
Objective Statement

  • Study and reengineer an OEM linear shock absorber in order to provide a better working, more cost effective product that can be mass produced for a wide variety of commercial and industrial uses.


Specific goals
Specific Goals

  • Improvements:

    • Better functionality – Adjustment Method

    • Material/design improvements

    • More cost effective product


Scope limitations
Scope & Limitations

  • Scope

    • 3D models and working drawings of new designs

    • Simulate and test with FEA

    • Research material changes

  • Limitations

    • Only redesigning OEM linear 1B model

    • Materials limited to commercially available materials


Deliverables
Deliverables

  • All concepts ideas

  • FEA results

  • Hand calculations to verify FEA

  • Working drawings of final design

  • Prototype


Upper level courses
Upper Level Courses

  • MET 306 - Modeling

  • MET 320 – Hand Calculations

  • MET 415/425 – FEA of Designs

  • MET 432 – Internal Fluid

  • MET 457 – Product Improvements

  • MET 470 – Material Selection

  • QC 450 – FMEA



Industrial shock absorbers
Industrial Shock Absorbers

  • Filled with hydraulic fluid

  • Designed to dissipate energy

    • Gradually bring a load to rest

  • Applications

    • Material Handling

    • Packaging Equipment

    • Small Robotics

    • Rotary Actuators


Design ideas
Design Ideas

  • Before deconstruction



Analysis of competitor shock
Analysis of Competitor Shock

  • Adjustment issues

  • Deconstruction

  • Testing

    • Physical

    • FEA



Internal fluid flow
Internal Fluid Flow

  • Compression

  • Extension




Energy absorbed comparison
Energy Absorbed Comparison

Data fit compared to linear regression

Prototype: R2 = 0.832

Competitor: R2 = 0.4546


Mts testing comparison
MTS Testing Comparison


Competitors fea
Competitors FEA

Hoop Stress Using Cylindrical Axis


Competitors fea1
Competitors FEA

VonMises Stress


Improvements
Improvements

  • Adjustment Methods

  • Material Improvements

  • Manufacturing Costs

  • Mounting Options




Final assembly
Final Assembly

Outer Cylinder

Foam Accumulator

Stepped Insert

O-Ring

Check Valve

O-Ring

Piston Shaft

Shaft Seal

Inner Cylinder

Top Cap


Final design fea
Final Design FEA

Hoops Stress:

Inner Cylinder

Longitudinal Stress:

Inner Cylinder


Final design fea1
Final Design FEA

Total Deformation:

Inner Cylinder


Final design fea2
Final Design FEA

Hoops Stress:

Stepped Shelf Insert

Fluid Exit Point Stress - VonMises:

Stepped Shelf Insert



Material cost analysis
Material Cost Analysis

**All estimates based on McMaster Carr pricing




Summary
Summary

  • Improvements

    • Manufacturing

    • Materials

    • Design

  • Deconstruction

  • Testing/Analysis

  • Prototype Design

  • Final Design


Questions
Questions

Special Thanks to Mr. Michael for assisting with MTS testing








Prototype fea
Prototype FEA

Compressive Stress:

Piston Shaft

Total Deformation:

Piston Shaft


Prototype fea1
Prototype FEA

Compressive Stress:

Outer Cylinder

Total Deformation:

Outer Cylinder


Prototype fea2
Prototype FEA

Contact Pressure Between Inner Cylinder and Insert Shelf



Competitors mts graphs 1hz
Competitors MTS Graphs (1Hz)

Shock Setting 0

Shock Setting 3

Shock Setting 6

Shock Setting 8


ad