FIIGUR 7.1 hieronder toon 'n raamwekr met lede AE, BF, CF, DE en EF - NSC Mechanical Technology Welding and Metalwork - Question 7 - 2023 - Paper 1
Question 7
FIIGUR 7.1 hieronder toon 'n raamwekr met lede AE, BF, CF, DE en EF. Bepaal grafies die grootte en tipe/aard van elke lid.
Skaal: Ruimtedigram: 1 : 100
Kragtedigram:... show full transcript
Worked Solution & Example Answer:FIIGUR 7.1 hieronder toon 'n raamwekr met lede AE, BF, CF, DE en EF - NSC Mechanical Technology Welding and Metalwork - Question 7 - 2023 - Paper 1
Step 1
Die grootte van die reaksie by stut RL
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Answer
Om die reaksie by stut RL te bereken, gebruik ons die som van die west dames in die vertikale rigting:
RL=10(8⋅8)+(4⋅5)+(6⋅2)=96 N
Dus, die reaksie by stut RL is 9.6 kN.
Step 2
Die grootte van die reaksie by stut RR
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Answer
Net soos by RL, kan ons die reaksie by RR bereken:
RR=10(8⋅8)+(4⋅5)+(8⋅3)=84 N
Dus, die reaksie by stut RR is 8.4 kN.
Step 3
Die buigmoment by punte B, C en D
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Answer
Die buigmomente kan soos volg bereken word:
Punt B:
MB=9.6⋅2=19.2 kN.m
Punt C:
MC=9.6⋅5=24 kN.m
Punt D:
MD=9.6⋅6=16.8 kN.m
Step 4
Teken 'n buigmomentdiagram van die balk.
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Answer
Die buigmomentdiagram kan geteken word deur die buigmomente wat bereken is, aan te dui. Begin by 'n waarde van 0 by punt A, styg tot 19.2 kN.m by punt B, waar dit dan afneem en 'n maksimum van 24 kN.m bij punt C bereik, en dan weer daal tot 16.8 kN.m by punt D. Dit eindig weer by 0 by punt E.
