Computational mechanics in design, Mechanical Engineering

Figure shows an impression of one of many lifting arrangements produced and used at a steel fabrication workshop. It was manufactured to lift a maximum of 50 kg and due to a product line change, it needs to be modified to lift a maximum mass of 100 kg.  Furthermore, the lifting mechanism at the loading point needs to be changed to a motor-driven winch which weighs 26kg. This motor driven win ch can accelerate a loads of 100 kg  to 0.8 m/s2 in 1 second.  Due to these changes, the factory manager needs to know whether the present lifting cranes  can be modified as quickly as possible using only the left over pipes that had been purchased to manufacture thethe original lifting cranes.  Your task is to provide the manager with a suitable proposal.

The required design constraints are as follows:

Function of the existing cranes:

A loading block is attached as shown to Pipe 3.  The load will be raised from the floor level to a height of 1.5 metres.  Do not consider the geometry of the load at this stage.  Pipe 2 is not attached to the base plate and free to rotate inside Pipe 1. Do not consider the plate attachment to the floor, assume pipe 3 is welded to a perfectly rigid plate.  Pipe 3 is rigidly connected to Pipe 2 by means of welding etc.

Available materials for modifications:

Materials: A few lengths of each of Pipe1, Pipe 2 and Pipe 3.  (All pipes are steel with Ultimate Strength is 320 MPa, Yield Strength 280 MPa, Shear Strength 248 MPa, E= 200 GPa, Poisson's ratio =0.3, Density 7880 kg/m3)

Posted Date: 4/1/2013 3:05:10 AM | Location : United States







Related Discussions:- Computational mechanics in design, Assignment Help, Ask Question on Computational mechanics in design, Get Answer, Expert's Help, Computational mechanics in design Discussions

Write discussion on Computational mechanics in design
Your posts are moderated
Related Questions
Determine the radius of curvature - motion of a particle: The motion of a particle in XOY plane is defined by the equation r (t ) = 3t i^ + (4t - 3t 2 ) j^ The distanc

ALUMINIUM Aluminium was first generated in year of 1825. Presently it is generated in quantity second only to steel. This is the most abundant metallic element on the crust of

Formulate stress analysis techniques relevant to a range of situations. The Brief A company has come and seek your advice on their draft design flat bridge. The bridge will

Explain about the eccentrically loaded footings. ECCENTRICALLY LOADED FOOTINGS When footings have overturning moments and axial loads, the base pressure under the footing wi

what is the practical application of worm and worm gear

a) A carbide tool with mild steel work piece was found to give life of 2hours while cutting at 50 mpm. Calculate the tool life if the same tool is used at a speed 25% higher than p


What is differential approach (differential formulation) in fluid mechanics? What are velocity and acceleration fields, give examples. Find, study and write down the differential f

Determine the forces in strings: The Electric light fixture weighing 15N hangs from point C , by two strings AC and BC . AC is inclined at 60° to the horizontal and BC

Use roller support - steel trusses of bridges: Explain, why do we use roller support in case of steel trusses of bridges? Sol. : In the bridges most of time external f