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17 Cards in this Set
- Front
- Back
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Definition of a system |
Parts and processes working together in an orderly fashion to produce a pre determined end product |
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End product of a tree system? |
Seed |
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End process of a tree system? |
Reproduction |
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What fuels the system and maintains order? |
Energy |
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2 types of energy? |
Potential and kinetic |
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2 types of mass? |
Dynamic and static |
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Why do cat claws or deer antlers not break? |
Shape optimised structure specifically designed for that role |
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U fork ? |
Tensile strength and interwoven fibres / interlocking grain |
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V shape fork ? |
Non shape optimised |
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An optimal structure has? |
Uniform stress over it’s whole surface |
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Thigmomorphogenesis? |
Obvious decay - no compensatory growth May be stable or lack the energy required |
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Conifers reduce the lever arm by? |
Producing compression wood to push the tree up |
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Broadleaves reduce the lever arm by? |
Producing tension wood to winch the tree up |
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2 types of reduction of the lever arm? |
Active - grow up form new leader Passive - strategy of flexibility |
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In built safety factor? |
4.5 |
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Three types of energy dissipation? |
Hydraulic - aerodynamic drag forces of foliage in the wind Mass damping - interaction of side branches attached to the main limb Visco elastic damping - damping effects of trees stem and root system |
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What determines biological design? |
Mechanical optimisation |
