1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Some materials properties

  1. Oct 19, 2012 #1
    Hi everyone!

    Im developing an application with a physics library.

    In the application I pre-setted some materials with the following properties,

    Density, Friction and Restitution

    Im not sure if this informations are truly trustable,

    Can you guys just review this for me?

    ===|Wood|==
    Density: 680 kg/m³
    Friction: 0.4
    Restitution: 0.7

    ===|Iron|==
    Density: 7400 kg/m³
    Friction: 1 (Steel = 0.8 )
    Restitution: 0.85

    ===|Concrete|==
    Density: 2300 kg/m³
    Friction: 0.65
    Restitution: 0.75

    ===|Rubber|==
    Density: 920 kg/m³
    Friction: 0.75
    Restitution: 0.3

    ===|Polystyrene|==
    Density: 80 kg/m³
    Friction: 0.5
    Restitution: 0.5

    ===|Plastic|==
    Density: 1300 kg/m³
    Friction: 0.35
    Restitution: 0.6

    References:
    http://www.matbase.com/
    http://www.matweb.com/
    http://physics.info/density/
    http://www.bulletphysics.org/Bullet/php [Broken] ... ?f=9&t=616
    http://www.woodweb.com/knowledge_base/W [Broken] ... dbook.html
    http://www.engineershandbook.com/Tables ... cients.htm
    http://www.engineeringtoolbox.com/frict [Broken] ... d_778.html
    http://hypertextbook.com/facts/2006/restitution.shtml

    Thanks!
     
    Last edited by a moderator: May 6, 2017
  2. jcsd
  3. Oct 20, 2012 #2
    I can't tell you if these values are correct, but the coefficient of friction and (probably) the coefficient of restitution are not intrinsic properties of the materials. Think about it, the same rubber tires will stop in a shorter distance on dry asphalt than on wet, and a basketball will bounce higher on cement than on shag carpeting.
     
  4. Oct 20, 2012 #3

    CWatters

    User Avatar
    Science Advisor
    Homework Helper

    How accurate do they need to be because the properties for wood vary by a factor of at least 2 depending on species.
     
  5. Oct 23, 2012 #4
    Thank you guys! :cool:
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Some materials properties
  1. Properties of fluids (Replies: 1)

Loading...