Question

The figure below shows a schematic drawing of a vehicular jack that is to be designed to support a weight of $W = 3000 N$. The opposite-handed threads on the two ends of the screw are cut to allow the link angle $\theta$ to vary from $15^{\circ}$ to $70^{\circ}$. The links are to be machined from AISI 1020 HR steel (use Shigley's tables) bars with the elastic modulus of $E = 200 GPa$. Each of the four links consists of two bars, one on each side of the central bearings. Each bar has a length of $350 mm$ and has a width of $w = 30 mm$. The pinned ends are to be designed to secure an end-condition constant of at least $C_{out} = 1.4$ for out-of-plane buckling. Calculate the minimum thickness for a safety factor of $3.5$ against buckling.

          The figure below shows a schematic drawing of a vehicular jack that is to be designed to support a weight of $W = 3000 N$. The opposite-handed threads on the two ends of the screw are cut to allow the link angle $\theta$ to vary from $15^{\circ}$ to $70^{\circ}$. The links are to be machined from AISI 1020 HR steel (use Shigley's tables) bars with the elastic modulus of $E = 200 GPa$. Each of the four links consists of two bars, one on each side of the central bearings. Each bar has a length of $350 mm$ and has a width of $w = 30 mm$. The pinned ends are to be designed to secure an end-condition constant of at least $C_{out} = 1.4$ for out-of-plane buckling. Calculate the minimum thickness for a safety factor of $3.5$ against buckling.

the figure below shows a schematic drawing of a vehicular jack that is to be designed to support a weight of w 3000 n the opposite handed threads on the two ends of the screw are cut to allo 16571

Added by Iker T.

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