It is just a test. Later I will do it in scale and with realistic loads.
Finite Element Model
Moderators: Head Monkey, kelvin, bigKam, skidesmond, chrismp
Finite Element Model
I am doing some FE modelling for my thesis work, so I decided to play with skis as well. This is the longitudinal strain (blu=tension, red=compression) for a loaded ski.
It is just a test. Later I will do it in scale and with realistic loads.
It is just a test. Later I will do it in scale and with realistic loads.
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Guest
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Here are more simulations. The colors stand for the longitudinal stress (red tensile, blue compressive).
First I compare my woodcore (4mm tip and tail, 16mm at the center) with the thinner core that are used normally (2mm, 12mm):
That is why I put less glass than usual in my skis.
I use 4 sheets of plywood. In one pair I used poplar (soft and fragile) as bottom sheet and birch (stiff and tough) for the 3 upper layers. Besides I did not make the transition from the layers as smooth as usual. Down here is the result:
Large compressive stress are applied to the poplar (lower picture). In that spot I reinforced with some glass, but it was not enough. Actually the glass and part of the wood cracked after few days of offpiste abuse.
First I compare my woodcore (4mm tip and tail, 16mm at the center) with the thinner core that are used normally (2mm, 12mm):
That is why I put less glass than usual in my skis.
I use 4 sheets of plywood. In one pair I used poplar (soft and fragile) as bottom sheet and birch (stiff and tough) for the 3 upper layers. Besides I did not make the transition from the layers as smooth as usual. Down here is the result:
Large compressive stress are applied to the poplar (lower picture). In that spot I reinforced with some glass, but it was not enough. Actually the glass and part of the wood cracked after few days of offpiste abuse.