9. i) What is a yield locus? ii) Draw a schematic yield locus for an isotropic...
9. i) What is a yield locus? ii) Draw a schematic yield locus for an isotropic material using both Von Mises and Tresca criteria.
Homework Answers
A yield locus or a yield surface which quantifies whether the material has yielded or not. It is usually convex and inside this surface, the linear elastic state of stress exists. However, if the state of stress lies on the surface, the material has reached its yield point and if it lies outside the surface, failure has occurred. Safe region is inside the yield locus
 |
|||
 |
|||
Add Answer to:
9. i) What is a yield locus? ii) Draw a schematic yield locus
for an isotropic...
(2D Yield Criteria, 16 points) The stress distribution of three wind turbine blades were investig...
(2D Yield Criteria, 16 points) The stress distribution of three wind turbine blades were investigated, and found there are thee critical place, A, B and C that are under a fairly high stress state. The 2D principal stresses at these spots are given below. The uni-axial yield strength (Ơy) ofwind turbine material is 100 MPa. Note that this is purely 2D problem. So, just use the 2D yield boundaries in the lecture note to solve this problem (a) Draw the...
The Tresca and von Mises yield criteria concern the yielding of materials by plastic deformation. Which...
The Tresca and von Mises yield criteria concern the yielding of
materials by plastic deformation. Which one of the
following statements concerning these criteria is
false?
Choose one of the following
options.
Select one or more:
Neither criterion is suitable for predicting failure by brittle
fracture.
The von Mises criterion is less conservative than the Tresca
criterion.
Both criteria are based on principal stress differences.
Neither criterion is suitable for predicting yield under
torsional stress.
Both criteria are empirical, based...
Problem 1: The in-plane stresses on a thin-walled spherical tank with an internal pressure are 06...
Problem 1: The in-plane stresses on a thin-walled spherical tank with an internal pressure are 06 = 0o = A 48” diameter spherical tank was designed to operate with internal pressure less than 100psi. Due to valve failure, the pressure increased to 190 psi. The design notebook shows that the tank was designed using Von Mises yielding criterion with a design factor nd = 2. The tank is made of Titanium. Sy = 120 x 102psi. Determine if this is...
Stress Analysis 3. A 20-mm diameter rod made ofa ductile material with a yield strength of...
Stress Analysis
3. A 20-mm diameter rod made ofa ductile material with a yield strength of 350 MPa is subjected to torque of 100 N.m and a bending moment of 150 N.m. An axial force is then gradually applied. Determine the value of force when the rod begins to yield. Solve the problem two ways using the (a) Tresca theory (Maximum shearing stress theory) and (b) von Mises theory (Maximum distortion energy theory) [12+12 points
3. A 20-mm diameter rod...
Q2- The stress elements in a piece of a structure have been evaluate to o 120MPa,...
Q2- The stress elements in a piece of a structure have been evaluate to o 120MPa, o,80 MPa, and t 60 MPa (all other stress components are zero). For this piece, a safety factor s= 1.5 with respect to yielding is required. 2.1- What yield strength Oy should the material have to fulfil this condition if we consider the Tresca criteria? 2.2- What yield strength Gy should the material have to fulfil this condition if we consider the von Mises...
2) Draw two schematic graphs using pencil showing a typical stress-strain curve for aluminum. The first...
2) Draw two schematic graphs using pencil showing a typical stress-strain curve for aluminum. The first graph should show engineering stress vs engineering strain, and the second graph should show true stress vs true strain. Label the showing: (i) elastic modulus (ii) proportional limit (iii) yield stress (iv) yield strain (v) fracture stress (vi) fracture strain on each graph. You may show both graphs on one plot. (5 points)
MEC 432 Mechanical Design I and draw the MDE theory please The bearings at A and...
MEC
432
Mechanical Design I
and draw the MDE theory please
The bearings at A and B exert only y and a components of force on the shaft. If Sy = 150 MPa for the selected ductile material, determine the factor of safety if the shaft diameter is 40 mm. Use the maximum distortion-energy theory of failure. Show the following procedures through the calculation steps (Free Body diagram (FBD), Reaction at A and D, Bending moment diagram, point of max....
A circular tube is to be made of 7075-T6 aluminum with a uniaxial yield strength of...
A circular tube is to be made of 7075-T6 aluminum with a uniaxial yield strength of 469 MPa. Suppose a hollow circular tube with an inside diameter of 46.0 mm is to be made of this material. If the limit loading condition for this part is the simultaneous application of an axial load of 120 kN and a torque of 2.0 kN-m, what minimum wall thickness is required to ensure that no yielding occurs at the limit load? Use the...
(13) Draw the schematic circuits for the following convertors (i) Single-Phase, Single-Way, Uncon...
(13) Draw the schematic circuits for the following convertors (i) Single-Phase, Single-Way, Uncontrolled (ii) Three-Phase, Single-Way, Uncontrolled (iii) Single-Phase, Fully-Controlled (v) Three-Phase, Fully-Controlled Illustrate the following types of power converter circuits with an inductive load (14) (i) single-phase full-wave converter; (ii) three-phase half-wave converter; (iii) a transistor chopper; (iv) single-phase bridge inverter
(13) Draw the schematic circuits for the following convertors (i) Single-Phase, Single-Way, Uncontrolled (ii) Three-Phase, Single-Way, Uncontrolled (iii) Single-Phase, Fully-Controlled (v) Three-Phase, Fully-Controlled Illustrate the following types of...
i. What is the purpose of the cyclic acetal in the following reaction? ii. Draw the...
i. What is the purpose of the cyclic acetal in the following reaction? ii. Draw the product formed if the original starting material was treated with 1. LiAIH4 & 2. H20 (i.e. what would happen if the 1st and 3rd reactions were not performed?) O O O 1. LiAlH, O H,0 OH OH Glycerol TSOH OH 2. H2O OH
(2D Yield Criteria, 16 points) The stress distribution of three wind turbine blades were investigated, and found there are thee critical place, A, B and C that are under a fairly high stress state. The 2D principal stresses at these spots are given below. The uni-axial yield strength (Ơy) ofwind turbine material is 100 MPa. Note that this is purely 2D problem. So, just use the 2D yield boundaries in the lecture note to solve this problem (a) Draw the...
The Tresca and von Mises yield criteria concern the yielding of
materials by plastic deformation. Which one of the
following statements concerning these criteria is
false?
Choose one of the following
options.
Select one or more:
Neither criterion is suitable for predicting failure by brittle
fracture.
The von Mises criterion is less conservative than the Tresca
criterion.
Both criteria are based on principal stress differences.
Neither criterion is suitable for predicting yield under
torsional stress.
Both criteria are empirical, based...
Problem 1: The in-plane stresses on a thin-walled spherical tank with an internal pressure are 06 = 0o = A 48” diameter spherical tank was designed to operate with internal pressure less than 100psi. Due to valve failure, the pressure increased to 190 psi. The design notebook shows that the tank was designed using Von Mises yielding criterion with a design factor nd = 2. The tank is made of Titanium. Sy = 120 x 102psi. Determine if this is...
Stress Analysis
3. A 20-mm diameter rod made ofa ductile material with a yield strength of 350 MPa is subjected to torque of 100 N.m and a bending moment of 150 N.m. An axial force is then gradually applied. Determine the value of force when the rod begins to yield. Solve the problem two ways using the (a) Tresca theory (Maximum shearing stress theory) and (b) von Mises theory (Maximum distortion energy theory) [12+12 points
3. A 20-mm diameter rod...
Q2- The stress elements in a piece of a structure have been evaluate to o 120MPa, o,80 MPa, and t 60 MPa (all other stress components are zero). For this piece, a safety factor s= 1.5 with respect to yielding is required. 2.1- What yield strength Oy should the material have to fulfil this condition if we consider the Tresca criteria? 2.2- What yield strength Gy should the material have to fulfil this condition if we consider the von Mises...
2) Draw two schematic graphs using pencil showing a typical stress-strain curve for aluminum. The first graph should show engineering stress vs engineering strain, and the second graph should show true stress vs true strain. Label the showing: (i) elastic modulus (ii) proportional limit (iii) yield stress (iv) yield strain (v) fracture stress (vi) fracture strain on each graph. You may show both graphs on one plot. (5 points)
MEC
432
Mechanical Design I
and draw the MDE theory please
The bearings at A and B exert only y and a components of force on the shaft. If Sy = 150 MPa for the selected ductile material, determine the factor of safety if the shaft diameter is 40 mm. Use the maximum distortion-energy theory of failure. Show the following procedures through the calculation steps (Free Body diagram (FBD), Reaction at A and D, Bending moment diagram, point of max....
(13) Draw the schematic circuits for the following convertors (i) Single-Phase, Single-Way, Uncontrolled (ii) Three-Phase, Single-Way, Uncontrolled (iii) Single-Phase, Fully-Controlled (v) Three-Phase, Fully-Controlled Illustrate the following types of power converter circuits with an inductive load (14) (i) single-phase full-wave converter; (ii) three-phase half-wave converter; (iii) a transistor chopper; (iv) single-phase bridge inverter
(13) Draw the schematic circuits for the following convertors (i) Single-Phase, Single-Way, Uncontrolled (ii) Three-Phase, Single-Way, Uncontrolled (iii) Single-Phase, Fully-Controlled (v) Three-Phase, Fully-Controlled Illustrate the following types of...
i. What is the purpose of the cyclic acetal in the following reaction? ii. Draw the product formed if the original starting material was treated with 1. LiAIH4 & 2. H20 (i.e. what would happen if the 1st and 3rd reactions were not performed?) O O O 1. LiAlH, O H,0 OH OH Glycerol TSOH OH 2. H2O OH
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 11 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 11 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 11 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 11 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 11 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 11 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 11 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 11 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 11 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 11 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 11 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 11 months ago