A ductile hot-rolled steel bar has a minimum yield strength in tension and compression of 350 MPa. Using the distortion-energy and maximum-shear-stress theories determine the factors of safety for the following principal stresses:

Solve the distributed load problem attached using both the calculus and the composite areas methods.

1MPA = 1N/mm? Select one: True False

2. A element was made of a material with the material parameters of ob-650MPa, os 600MPa, o-1-360MPa, 0-600MPa. The stresses on the most dangerous section are max 250MPa, min-100MPa. The element work under the situation -C(constant). K-1.5. Please: 1) Draw out the constant life curves of material and shaft. 2) Mark out the working point and ultimate point figure. 3) Calculate the safety factor by graphical method.

Task 2 Q1. A tensile testing machine operates using two lead screws. Both lead screws have a square thread profile and can withstand the maximum load of 16 tonnes & torque of 150 KNm. The pitch width p = l = 4 mm. what is the efficiency of the square thread?

The critical stress element of a machine part is provided below. The engineer is considering two materials and the factor of safety is a concern. a. AISI 1025 CD steel (Sy 415 MPa, Sut = 505 MPa) b. ASTM Class 30 Gray Cast Iron (Sut = 214 MPa and Suc = 751 MPa) 70 MPa 80 MPa For a Non-Conservative Design, which of the two materials do you consider safe and why? 60 MPa

Which one of the following, in some form or another, causes all other choices? Shear stress Force Normal Stress Bearing Stress

Required Information NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. A Howe roof truss is shown. Take P₁= P₂= P3 = 600 lb. P2 300 b P1 BY CI P3 E SASHSA→→SA- The force in member AB (FAB) is The force in member AC (FAC) is The force in member BC (FBC) is The force in member CE (FCE) is The force in member BD (FBD) is The force in member BE (FB) is The force in member DF (FDA) is The force in member DE (FDE) is The force in member EF (FEA) is The force in member EG (FEG) is The force in member FG (FFG) is The force in member FH (FFH) is The force in member GH (FGH) is 300 lb 6 ft G H 6 ft Determine the force in each member of the Howe roof truss shown. State whether each member is in tension (7) or compression (C). lb (Click to select) V lb (Click to select) lb (Click to select) lb (Click to select) lb (Click to select) lb (Click to select) lb (Click to select) lb (Click to select) lb (Click to select) V lb (Click to select) lb…

the correct answer is 3

f in a tensile loading application, the factor of safety for one member is set as FS = 2.2 based on the material's tensile (failure) strength as    = 614 MPa, then the load member's allowable stress in this application will be:   =  _______  MPa. Calculate your answer to 1 decimal place.