مشكله اعتقد انها عن اغلب الطلاب بخصوص بروجيكت 307

السلام عليكم ورحمة الله وبركاته ..
اخواني طلاب الـ me
هذا التررم ابتلانا الله بكوردنيتر في مادة me 307
وقرر انه يعطينا بروجكت فيه هذا الماده
للاسف من اول ما اخذت البروجكت وانا اقلبه يمين ويسار ولا وصلت الى اي نتيجه
ارجوا منكم ان نتعاون حتى نصل الى حل مع هذا البروجكت الزلع !!

 

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This design exercise will help you constructing a design methodology for a shaft as an example. You will need to support your decisions scientifically and/or through reasonable assumptions wherever needed. An introductory video on Design Process will be given in class.
What is expected from you?
A final design report that has to include the following
(i) All alternative designs and the final design selection
(ii) For the final design, submit
• drawings,
• supporting analysis (get help from the design steps shown in the project),
• bill of materials (including quantity needed and cost).
(iii) The report has to be clearly written and well organized.
Project:
A machine needs a shaft shown in the above figure (dimensions in mm) that is driven by a motor attached on the right side using a flexible coupling. The shaft will transmit the torque through a pinion to an upper gear (not mentioned in the figure).
• The pinion transmits a resultant force at a pressure angle of 20oC to the upper gear.
• The motor provides a speed of 1200 rpm and a torque of 15Nm.
• The design factor is chosen in the range 1.5-2.5.
• The initial material selected is AISI 1020 cold-drawn steel.
It is required to design the shaft and answer the following tasks:
(a) Sketch a general shaft layout, indicating means
a. to locate the gears and bearings, and
b. to transmit the torque.
(b) Perform a force analysis to find the bearing reaction forces
(c) Draw shear and bending moment diagrams.
Cont.
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(d) Determine the critical locations for stress design.
(e) Determine critical diameters of the shaft based on fatigue and static stresses at the critical locations. Use two different fatigue criteria and check the influence on the design.
(f) Make any other dimensional decisions necessary to specify all diameters and axial dimensions. Sketch the shaft to scale, showing all proposed dimensions.
(g) Check the deflection at the gear, and the slopes at the gear and the bearings for satisfaction of the recommended limits in Table 7–2. Is there any effect on the rolling bearing to be chosen?
(h) If any of the deflections exceed the recommended limits, make appropriate changes to bring them all within the limits.
(i) Suggest better materials that may improve the deflection without changing the overall dimensions.
--------------------------------------End of the project------------------------------

 

هذا كل ما يخص البروجكت ارجوا المساعده

على الاقل فيما يتعلق في بداية المشرووع !!

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