PSI - Issue 2_A

Yingyu Wang et al. / Procedia Structural Integrity 2 (2016) 3233–3239

3234

Author name

/ Structural Integ

rity Procedia 00

(2016) 000–000

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1. I

C prop dete valu max shea load con first and is n of th I of t criti 2. T B ( τ− M vari (20 low T

T he body as sh ss and strain ows: ritical plane agate on cer rmined the c e of the nor imum shear r strain ampl histories are suming. To a proposed by Susmel (2015 here always ot coincide w e capability n this scenari he γ− MVM p cal plane app he shear stra ased on the r VM) to pre able amplitud 15, 2016) pro /medium-cyc

approaches ta tain planes. A ritical plane b mal stress. B strain amplitu itude when th concerned, d ddress this in Bannantine , 2016), and exists an argu ith the physic of the critical o, this paper roposed by roach propose in Maximum esearch by M dict, in the e multiaxial posed the she le fatigue regi own in Fig. states at the c

ke as a startin s to definiti y maximizin rown and M de. Fatemi an e crack initiat efining the o tractable prob and Socie (19 the weight fu ment on that al concept w plane approac aims to inves Wang and Su d by Fatemi Variance M acha (1989), high-cycle fa fatigue loadin ar strain-Ma me. 1a is subjected ritical locatio

g point the i on of the crit g a linear com iller (1973) d Socie (198 ion process is rientation of lem, several 91), the MV nction method the predictio hich it is base h to predict t tigate the acc smel (2015, and Socie (19 ethod ( γ -MV Susmel (201 tigue regime g. Then, by e ximum Varia

dea that, at th ical plane its bination of defined the 8) assumed th Mode II gov the critical pl approaches h M proposed . ns of the criti d on. And, a he crack direc uracy in pred 2016) and th 88) (FS). M) 0) formulated , the orientat xtending this nce Method (

e critical loca elf, there are the shear stre critical plane at the critica erned. As far ane itself bec ave been pro by Macha (19 cal plane app limited work tions (Jiang, icting the orie e MDM app

tions, fatigue different wa ss amplitude as the plane l plane is the as variable am omes very co posed which 89), Susmel roach to the c has been don 2007). ntation of Sta lied with the

cracks initiat ys. Findley ( and the max experiencin plane of max plitude mult mplicate and include: the M (2010), and W

e and 1956) imum g the imum iaxial time DM ang

racking orien e in the eval

tation uation

ge I fatigue c shear strain

racks based

the shear str ion of the cr idea to in ter γ− MVM) wh

ess-Maximum itical plane u ms of strain, ich is suitabl

Variance M nder constan Wang and Su e to be used

ethod t and smel in the

to a comple n, point O. T

x system of fo he stress and

rces, which r strain states

esults in a tri- at point O c

axial time-va an be express

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stre foll

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ody subjected to

an external syste

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definition of a ge

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ane, Δ, and coord

inate system