helu hoʻokō Bolt

ʻO ka papa hana Bolt, ʻo ia hoʻi ka papa hana bolt no ka hoʻohui ʻana i ke kila, ua māhele ʻia i ʻoi aku ma mua o 10 mau māka, e like me 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9, etc.

ʻO ke ʻano o ka papa hana bolt ka pae honua ākea, ka bolt o ka papa hana like, me ka nānā ʻole i ka ʻokoʻa o kāna mea a me ke kumu, ua like kāna hana, hiki i ka hoʻolālā ke koho wale i ka pae hana.

ʻO ka ikaika 8.8 a me 10.9 magnitude e pili ana i ke kiʻekiʻe o ke koʻikoʻi shearing o ka bolt he 8.8 GPa a me ka 10.9 GPa 8.8 nominal tensile ikaika o 800 n / 640 n he nominal yield strength bolts/i hōʻike maʻamau ʻia i ka "XY" ikaika, X * 10 ikaika ikaika, X * 10. 10) = ka ikaika hua o ka bolt (e like me ka mea i ʻōlelo ʻia ma ka logo: ka yield / tensile strength = Y / 10, ʻo ia hoʻi 0. Hōʻike ʻo Y) e like me ka nui 4.8, ʻo ka ikaika tensile o ka bolt: 400 mpa. Ka ikaika hua: 400 * 8/10 = 320MPa. ʻO ka A2-70, ʻo ia hoʻi ka wehewehe ʻana i nā ana: ka lōʻihi ana ana o ka honua i kēia mau lā ʻelua ʻano nui, hoʻokahi no ka ʻōnaehana metric, ʻo ke ana ana he mika (m), kenimika (cm), mm (mm), etc. Ana ʻōnaehana metric: 1m =100 cm=1000 mm2, ana ʻōnaehana English: (8) 1 ʻīniha =8 ints 1 ʻīniha =25.4 mm

ʻO nā bolts i hoʻohana ʻia no ka hoʻopili ʻana i nā hale kila i ʻoi aku ma mua o 10 mau māka, me ka 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9 a me 12.9. ʻO ka hōʻailona hōʻailona hana Bolt he ʻelua ʻāpana, e hōʻike ana i ka nominal tensile ikaika waiwai a me ka piʻi ʻana o ka ikaika laʻana: 4.6.
1. ʻO ka ikaika tensile nominal o nā mea bolt hiki i 400MPa;
2. He 0.6 ka lakene ikaika kulou o ka mea bolt;
3. Hiki i ka 400 × 0.6 = 240MPa ka ikaika o ka hoʻoulu ʻana o ka mea bolt.
ʻO ka papa hana 10.9 kiʻekiʻe ikaika bolt, kāna mea ma hope o ka mālama wela, hiki ke hoʻokō:
1. ʻO ka ikaika tensile nominal o ka mea bolt hiki i 1000MPa;
2. He 0.9 ka lakene ikaika kulou o ka mea bolt;
3. Hiki i ka 1000 × 0.9 = 900MPa ka nui o ka ikaika hāʻawi inoa o nā mea bolt.