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Category > Engineering Posted 09 May 2017 My Price 7.00

The flow curve parameters for the aluminum alloy of Problem

 

The flow curve parameters for the aluminum alloy of Problem 19.29 are: K = 240 MPa and n = 0.16. If the die angle in this operation =90°, and the corresponding Johnson strain equation has constants a= 0.8 and b = 1.5, compute the maximum force required to drive the ram forward at the start of extrusion.

 

Problem 19.29

An L-shaped structural section is direct extruded from an aluminum billet in which Lo = 250 mm and Do= 88 rnm. Dimensions of the cross section are given in Figure P19.29. Die angle = 90°. Determine (a) extrusion ratio, (b) shape factor, and (c) length of the extruded section if the butt remaining in the container at the end of the ram stroke is 25 mm.

 

 

 
 

Answers

Alpha Geek
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Status NEW Posted 09 May 2017 12:05 PM My Price 7.00

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file 1494333036-Answer.docx preview (172 words )
T-----------he -----------flo-----------w c-----------urv-----------e p-----------ara-----------met-----------ers----------- fo-----------r t-----------he -----------alu-----------min-----------um -----------all-----------oy -----------of -----------Pro-----------ble-----------m 1-----------9.2-----------9 a-----------re:----------- K -----------= 2-----------40 -----------MPa----------- an-----------d n----------- = -----------0.1-----------6. -----------If -----------the----------- di-----------e a-----------ngl-----------e i-----------n t-----------his----------- op-----------era-----------tio-----------n =-----------90Â-----------°, -----------and----------- th-----------e c-----------orr-----------esp-----------ond-----------ing----------- Jo-----------hns-----------on -----------str-----------ain----------- eq-----------uat-----------ion----------- ha-----------s c-----------ons-----------tan-----------ts -----------a= -----------0.8----------- an-----------d b----------- = -----------1.5-----------, c-----------omp-----------ute----------- th-----------e m-----------axi-----------mum----------- fo-----------rce----------- re-----------qui-----------red----------- to----------- dr-----------ive----------- th-----------e r-----------am -----------for-----------war-----------d a-----------t t-----------he -----------sta-----------rt -----------of -----------ext-----------rus-----------ion-----------. -----------Pro-----------ble-----------m 1-----------9.2-----------9 -----------An -----------L-s-----------hap-----------ed -----------str-----------uct-----------ura-----------l s-----------ect-----------ion----------- is----------- di-----------rec-----------t e-----------xtr-----------ude-----------d f-----------rom----------- an----------- al-----------umi-----------num----------- bi-----------lle-----------t i-----------n w-----------hic-----------h L-----------o =----------- 25-----------0 m-----------m a-----------nd -----------Do=----------- 88----------- rn-----------m.
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