ʻO ka paipu huinahā VS ʻāpana ʻehā, ʻo wai ke ʻano i ʻoi aku ka lōʻihi?
ʻO ka ʻokoʻa hana ma waenapaipu hāhāhāapaipu huinahalikei nā noi ʻenekinia pono e hoʻopaʻa ʻia mai nā hiʻohiʻona mechanical e like me ka ikaika, ʻoʻoleʻa, kūpaʻa, a me ka hiki ke hāpai.
1. Ka ikaika (ke kūlou a me ke kuʻi ʻana)
Ka ikaika kulou:
Paipu Rectangular: Ke hoʻokuʻu ʻia ka ukana ma ka ʻaoʻao ʻaoʻao lōʻihi (ke kiʻekiʻe), ʻoi aku ka nui o ka manawa inertia, a ʻoi aku ka maikaʻi o ke kūlou ʻana ma mua o ka paipu square.
No ka laʻana, ʻoi aku ka kiʻekiʻe o ka ikaika kulou o 100 × 50mm rectangular tube ma ka ʻaoʻao lōʻihi ma mua o ka 75 × 75mm square tube.
Paipu huinaha: Ua like ka manawa inertia ma nā ʻaoʻao a pau, a ʻo ka hana kulou ʻana he symmetrical, akā ʻoi aku ka liʻiliʻi o kona waiwai ma mua o ka ʻaoʻao lōʻihi o ka paipu rectangular ma lalo o ka ʻāpana keʻa like.
Ka hopena: Inā maopopo ke kuhikuhi o ka ukana (e like me ke ʻano o ka beam), ʻoi aku ka maikaʻi o ka paipu rectangular; inā loli ke kuhikuhi o ka ukana, ʻoi aku ke kaulike o ka paipu huinaha.
Ka ikaika torsion:
ʻOi aku ka kiʻekiʻe o ka torsion mau o ka paipu huinahā, ʻoi aku ka lōkahi o ka puʻupuʻu koʻikoʻi, a ʻoi aku ka maikaʻi o ke kūpaʻa ʻana ma mua o ka paipu rectangular. No ka laʻana, ʻoi aku ka ikaika o ke kū ʻana o ka torsion o ka 75 × 75mm square tube ma mua o ka 100 × 50mm rectangular tube.
Ka Manaʻo Manaʻo: Ke ʻoi aku ka nui o ka ukana torsional (e like me ke kumu hoʻouna), ʻoi aku ka maikaʻi o nā paipu huinahā.
2. 'Oolea (anti-deformation hiki)
ʻOoleʻa kūlou:
Pili ka ʻoʻoleʻa i ka manawa o ka inertia. ʻOi aku ka ʻoi aku o ka ʻoʻoleʻa o nā paipu rectangular ma ka ʻaoʻao ʻaoʻao lōʻihi, he kūpono ia no nā hiʻohiʻona e pono ai ke kūʻē i ka unidirectional deflection (e like me nā kaola alahaka).
Loaʻa i nā paipu huinahā like ka ʻoʻoleʻa bidirectional like ʻole a kūpono i nā ukana multidirectional (e like me nā kolamu).
Ka hopena: ʻO nā koi ʻoʻoleʻa e pili ana i ke kuhikuhi o ka ukana. E koho i na paipu huinahalike no na haawe unidirectional; koho i na paipu huinahalike no na haawe bidirectional.
3. Pa'a (kū'ē kū'ē)
ʻO ke kuʻi kūloko:
ʻOi aku ka nui o nā paipu rectangular i ka lākiō ākea a me ka mānoanoa, a ʻoi aku ka maʻalahi o nā ʻāpana ʻāpana ʻāpana i ke kuʻekuʻe kūloko, ʻoi aku ka nui ma lalo o ke kaomi ʻana a i ʻole nā ukana ʻā.
ʻOi aku ka maikaʻi o ka paʻa kūloko o nā paipu square ma muli o ko lākou ʻāpana kea like.
ʻO ke kuʻekuʻe holoʻokoʻa (Euler buckling):
Pili ka ukana Buckling i ka radius liʻiliʻi o ka gyration o ka ʻāpana keʻa. Ua like ka radius o ka gyration o na paipu huinahalike ma na aoao a pau, oiai o ka radius o ka gyration o na paipu huinahalike ma ka aoao pokole, ua emi ia, e oi aku ana ia lakou i ka buckling.
Ka hopena: Ua makemake ʻia nā paipu square no nā lālā compressive (e like me nā pou); inā kaohi ʻia ka ʻaoʻao ʻaoʻao lōʻihi o ka paipu rectangular, hiki ke uku ʻia e ka hoʻolālā.
4. Ka hiki ke amo (axial a me na ukana hui)
Axial kaomi:
Pili ka hiki ke halihali i ka ʻāpana cross-sectional a me ka ratio slenderness. Ma lalo o ka ʻāpana keʻa like, ʻoi aku ka nui o nā paipu huinahā ma muli o ko lākou radius huli nui.
ʻO ka ukana hui (ka hoʻopili ʻana a me ke kulou ʻana):
Hiki i nā paipu rectangular ke hoʻohana i ka hoʻolālā i hoʻonohonoho pono ʻia i ka wā e maopopo ai ke kuhikuhi ʻana o ka manawa kūlou (e like me ka haʻawe kū pololei ma ka ʻaoʻao lōʻihi); kūpono nā paipu huinaha no nā manawa kūlou ʻelua.
5. Nā kumu ʻē aʻe
Hoʻohana waiwai:
ʻOi aku ka maikaʻi o nā paipu rectangular a mālama i nā mea i ka wā i hoʻopili ʻia i ka unidirectional bending; ʻoi aku ka maikaʻi o nā paipu huinaha ma lalo o nā haʻawina multi-directional.
ʻoluʻolu pili:
Ma muli o ke kūlike o nā paipu huinahā, ʻoi aku ka maʻalahi o nā pilina node (e like me ka welding a me nā bolts); Pono nā paipu rectangular e noʻonoʻo i ka directionality.
Nā hiʻohiʻona noiʻi:
ʻO nā paipu ʻāʻī: nā kaola hale, nā lima crane, nā pahu kaʻa (akaka ka hoʻouka ʻana).
Nā paipu huinaha: nā kolamu kūkulu hale, nā pahu ākea, nā papa mīkini (nā haʻawina multi-directional).
Ka manawa hoʻouna: Mei-28-2025
