Recent content by Hammad

hi how much force and torque do i need to be able to rotate the two twin axles connected by spur gears of equal gear ratio and moving counter to each other. the maximum force i can apply on the handle in the given direction is 400 N and the torque generated by 19.4 cm by applying 400 N is 77.8 Nm

im actually confused, how can i add the two forces and multiple by the radius because the distances from their respective axles is different relative to the handle and they are moving counter to each other?

no its not number of teeth but, left axle has 5 cuttering blades, right one has four.

yeah i think you are right about direction of shear force. you are also correct about weight of the blade should be at the centre and not edge of the blade., actually i added up the weight force of the blade which is 102.25 N left and 81.8 N right so shear force left is 1269.2 N and 1015.36 N...

Homework Statement hi, I am designing a plastic bottle shredder machine, the mechanism looks like this roughly except that there are spur gears which enable the axles to rotate into each other. The axle on the left has 5 cutters which exert a total force of 1371.45 N in the given direction...

i actually finally found a perfect example calculation for shredder the only different is there is a pulley rotating the shaft, but my system consists of a handle, and this system is single shaft.

Sir i cannot chnge the design unfortunately because we have already submitted this design in our assignment, so we have to work on it only i just want to know that in this arrangement what is the free body diagram of this system to calculate the shear stress and bending moment of the shaft i...

yes bottle is meant to be reduced in size for further recyling process. the bottle is a typical soda 1.5 liter bottle size is 35 cm length and 8 cm in diameter, the bottle would be inserted vertically not horizontally. i didnt actually understand you second sentence, but i presume you mean why...

it is my university assignment, i have also now attached the calculation i have done, can you please help me with this? i have already done finite element analysis but i need to verify the design with calculations. thanks

this is my design i want to calculate its various stress and forces. since the bottle is being cut, i think there is perpendicular force upwards, how do i calculate this cutting shear force? 1) force and stress applied by cutting blade on the plastic bottle 2) force moment and stress...

Hello, i would just like to thank all the participants for their input, it helped to clarify the issues and confusion which i was facing and at the end, our lecturer did admit the fact that there were mistakes made in the assignment sheet. thanks again for you spot on help

hello guys, i just want to thank chestermiller and andrewtirtawijaya, for your input, you were correct that there would be design question, although i left the question on choice, but i appreciate the help i got. This forum is a very nice forum and i have got spot on help for all the issues i...

i already have the solution, but such a lengthy qoestion won't come i guess.

can you please give any example or elaborate on possible question which will give input values of power cycle and output values for heat exchanger? i have a design question related to heat exchanger but there is no power cycle involved here is the question the solution of this question is...

hello, im in bachelors mechanical engineering programme and my thermodynamics papers are in few days one question is related to heat exchangers or forced convection, but our professor has hinted that in the exam the question regarding heat exchanger, forced convection will be a case study of a...