【Daily Question】【AC Version for Static Equipment...Question 63】March 4, 2019 – True/False Multiple Choice Question...Everything is going well

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This post was last edited by kareale88 on 2019-3-4 08:33: bg4.png【Daily Question】【Static Equipment Discussion Version...Question 63】 March 4, 2019 – True/False question...Everything is going well...........................................................................Thank you all for voting – the final voting stage for the 2018 “Top Ten Outstanding Members of Haichuan” has concluded! Wishing all my friends by the seas and rivers: happiness every year, a harmonious family life, good fortune and success, smooth circumstances and good health, and prosperity throughout life! ........................................................................... Answers (multiple choice, multiple choice, multiple choice) please fill in in order. Reward rules: 1 wealth for participation, 3 wealth for each correct answer, up to a maximum of 10 wealth. This topic is valid for two days; no scoring will be given if it exceeds two days by 48 hours. ...........................................................................1. In static strength design, the allowable stress for brittle materials is equal to ( ) divided by the safety factor. A. Strength limit ； B、Yield limit ； C、Proportional limit ； D、Elastic limit ； ---------------------2. Among the following statements regarding the allowable stress of plastic materials, which one is correct? （） A. The allowable stress is equal to the proportional limit divided by the safety factor. B. The allowable stress is equal to the yield limit divided by the safety factor. C. The allowable stress is equal to the strength limit divided by the safety factor. D. The allowable stress is equal to the proportional limit. --------------------- 3. In the design calculations using the allowable stress method, the safety factor taken into account is the ratio of the material’s ultimate stress to its allowable stress. That is, the safety factor of the material strength reserve. （）A、Correct B、Incorrect Those who are interested can go to the discussion thread on the allowable stress of materials to engage in the discussion: [Discussion Thread 20]. How should we choose regarding this question on the allowable stress of materials? https://bbs.hcbbs.com/thread-2319505-1-1.html---------------------Answers: 1. A 2. B 3. B Comments: This question tests the allowable stress of materials with different properties. Item 3: The error is in the second half of the sentence – the safety factor is not a safety multiple of the material’s strength reserve.