MECH $324$

HW $06-$ Dynamic Analysis

Problem $1.$ For the mechanical press shown below, given the dimensional and inertial data of all links, find the value of input torque needed at $O$ as well as all joint forces to generate the following desirable motion when a resistance force of $500$ N $($in negative $y$ direction$)$ is applied to the slider. Desirable motion is: the input angle $$ changes from $=10$ to $=45$ with $\frac{d}{dt}=5rpm$ and points$)$

$r_0=50cm$

$r_1=18cm$

$r_2=35cm$

$r_3=35cm$

$r_4=45cm$

$r_5=45cm$

$h=30cm$

$=20$

$=110$

Rubric:

Correct kinematic $(10$ points$)$

FBDs and equations $(50$ points$)$

Code and results $(40$ points$)$

Inertial data:

All links are made of steel with mass density of $7850k\frac{g}{m}3.$

All links have an out$-$of$-$plane thickness of $4$ cm $.$

$$ Links at $OA,AB,$ and DE have an in$-$plane thickness of $4$ cm $.$

$$ Slider block has an in$-$plane dimensions of a $15$ cm by $15$ cm square.