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The Technological World
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What is a technical object?
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Exploded View of a Technical Object
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Constraints A constraint is a stress or a force that is applied on an object. Technical objects should be designed to overcome these stresses. There are 5 different constraints to know:
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Compression A squeezing, crushing, or pushing force
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Compression A squeezing, crushing, or pushing force
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Tension A pulling or stretching force.
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Tension A pulling or stretching force.
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Torsion A twisting force
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Torsion A twisting force
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Deflection A bending force
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Deflection A bending force
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Shearing A cutting, or tearing force
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Shearing A cutting, or tearing force
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Too much stress Sometimes a constraint can be so strong that it can damage an object by causing a deformation (change in shape). There are 3 types of deformations to know:
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Elastic deformation The material returns to its original shape once the constraint is removed. The change in shape is temporary.
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Plastic A permanent change in shape, even when the constraint is removed.
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Fracture The constraint causes the object to break
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