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Analysis of additional load and fatigue life of preloaded bolts in a flange joint considering a bolt bending load
ID
Okorn, Ivan
(
Avtor
),
ID
Nagode, Marko
(
Avtor
),
ID
Klemenc, Jernej
(
Avtor
),
ID
Oman, Simon
(
Avtor
)
PDF - Predstavitvena datoteka,
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MD5: 2E87B1BE2D1D561763FF4C7F6D4791E0
URL - Izvorni URL, za dostop obiščite
https://www.mdpi.com/2075-4701/11/3/449
Galerija slik
Izvleček
The influence of the working load on the dynamic loading of the bolt was investigated in our study for two cases of flange joints. The analytical calculation according to the Verein Deutscher Ingenieure (VDI) 2230 recommendation and the numerical analysis using the finite element method (FEM) were performed for a model of a four-bolt joint. To verify the FEM analysis, the forces in the bolts were measured during preloading and during the application of the working load on the test rig. Based on the analytical and numerical results, the influence of the working load application point on the bolt load and its fatigue life was analysed for different cases. Comparison of the results shows that the analytical method overestimates the additional bolt stresses at low working load, mainly due to the extremely large fraction of bending stress. As the working load increases, the differences between the two methods decrease, but only for the reason that the analytical method can only linearly scale the overestimated results at lower working load, and FEM analysis, on the other hand, shows a progressive increase of the additional stress in the bolt at higher working loads due to the spreading of the flange. It is also shown that a high washer significantly increases the fatigue life of the bolt for two reasons: (i) a high washer reduces the additional stress in the bolt, and (ii) the high washer shifts the critical fatigue point from the thread area to the transition of the bolt shank to the head.
Jezik:
Angleški jezik
Ključne besede:
bolted joint
,
flange joint
,
preload
,
resilience
,
working load
,
load introduction factor
,
alternating stress range
,
fatigue life
Vrsta gradiva:
Članek v reviji
Tipologija:
1.01 - Izvirni znanstveni članek
Organizacija:
FS - Fakulteta za strojništvo
Status publikacije:
Objavljeno
Različica publikacije:
Objavljena publikacija
Leto izida:
2021
Št. strani:
20 str.
Številčenje:
Vol. 11, iss. 3, art. 449
PID:
20.500.12556/RUL-126175
UDK:
620.178.3:519.61(045)
ISSN pri članku:
2075-4701
DOI:
10.3390/met11030449
COBISS.SI-ID:
59147523
Datum objave v RUL:
13.04.2021
Število ogledov:
791
Število prenosov:
249
Metapodatki:
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Objavi na:
Gradivo je del revije
Naslov:
Metals
Skrajšan naslov:
Metals
Založnik:
MDPI AG
ISSN:
2075-4701
COBISS.SI-ID:
15976214
Licence
Licenca:
CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:
http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:
To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
Začetek licenciranja:
09.03.2021
Sekundarni jezik
Jezik:
Slovenski jezik
Ključne besede:
vijačna zveza
,
prirobnična zveza
,
prednapetje
,
togost vijačne zveze
,
delovna obremenitev
,
faktor prijemališča sile
,
amplituda napetosti
,
doba trajanja
Projekti
Financer:
ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:
P2-0182
Naslov:
Razvojna vrednotenja
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