at does the term "tolerance" refer to when designing dynamic surfaces? A. Material durability B. The space between connected parts, designed for supported materials C. The friction and resistance between connected parts D. The dynamic surface design complexity ich of the following parameters must be considered before the design phase of a amic surface? Select all correct answers. A. Tolerance B. Element size C. Friction D. Minimum thickness E. Support material removal F. Positioning ynamic surface is an array of connected surfaces that produces a mechanical ct; the movement of one surface causes predictable movement of the others. A. True B. False
Design Against Fluctuating Loads
Machine elements are subjected to varieties of loads, some components are subjected to static loads, while some machine components are subjected to fluctuating loads, whose load magnitude tends to fluctuate. The components of a machine, when rotating at a high speed, are subjected to a high degree of load, which fluctuates from a high value to a low value. For the machine elements under the action of static loads, static failure theories are applied to know the safe and hazardous working conditions and regions. However, most of the machine elements are subjected to variable or fluctuating stresses, due to the nature of load that fluctuates from high magnitude to low magnitude. Also, the nature of the loads is repetitive. For instance, shafts, bearings, cams and followers, and so on.
Design Against Fluctuating Load
Stress is defined as force per unit area. When there is localization of huge stresses in mechanical components, due to irregularities present in components and sudden changes in cross-section is known as stress concentration. For example, groves, keyways, screw threads, oil holes, splines etc. are irregularities.
![What does the term "tolerance" refer to when designing dynamic surfaces?
A. Material durability
B. The space between connected parts, designed for supported materials
C. The friction and resistance between connected parts
D. The dynamic surface design complexity
Which of the following parameters must be considered before the design phase of a
dynamic surface? Select all correct answers.
A. Tolerance
B. Element size
C. Friction
D. Minimum thickness
E. Support material removal
F. Positioning
A dynamic surface is an array of connected surfaces that produces a mechanical
effect; the movement of one surface causes predictable movement of the others.
A. True
B. False
Which of the following are basic elements of 2D nesting? Select all correct answers.
A. Part orientation
B. Part combinations
C. Spacing between parts
D. Material selection
Which of the following are benefits of proper nesting and positioning? Select all
correct answers.
A. Reduced material waste
B. Reduced energy usage due to shorter print-head travel
Sharper details and smoother surface finish
C.
D. Increased yield of parts per print job
Part orientation can affect its strength. True or false?
A. True
B. False
Something That Moves Something - Introduction to 3D Printing
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