wikifemfuchde2019:lez_2019-03-18
Differenze
Queste sono le differenze tra la revisione selezionata e la versione attuale della pagina.
Entrambe le parti precedenti la revisioneRevisione precedenteProssima revisione | Revisione precedente | ||
wikifemfuchde2019:lez_2019-03-18 [2019/03/14 10:27] – 163097 | wikifemfuchde2019:lez_2019-03-18 [2019/03/26 07:29] (versione attuale) – 163097 | ||
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+ | ===== Thin walled profile in torsion ===== | ||
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+ | Open thin-walled rectangular cross section profile (a longitudinal cut is performed at the lateral wall center line, whose kerf (width) is negligible), | ||
+ | (Dimensions at the midsurface: 118x38mm), element size ranging from ~10mm to ~20mm. | ||
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+ | {{: | ||
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+ | At the A cross section, a skew-symmetry material continuity constraint is applied. | ||
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+ | The kinematic constraint at the B point (sphere in cylinder joint) is a positioning constraint, along with the $w_A=0$ axial constraint in A. | ||
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+ | A twist per unit length equaling 0.001 radiant/mm is imposed to the profile, i.e. a $\psi_B=0.001 \cdot l$ (it was, __erroneously__, | ||
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+ | The reaction moment associated with the constraint will determine the applied torque $T$. | ||
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+ | modello iniziale | ||
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+ | ---- | ||
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