Lightweight aluminum alloys are widely used in automotive structural parts. Clinching (press-joining) is one of the most promising alternatives to welding for joining alloys, and as failure joint mainly caused by fatigue, fatigue properties clinched joints directly affect reliability safety connected specimens. To gain a deeper understanding this phenomenon, static mechanical Al7075 alloy single-lap were studied using strength tensile-tensile tests. The F–N curves fitted straight-line...

Since lateral stiffness of existing wire ropes used as guide cables is difficult to achieve reliable guidance for conveyances in deep shaft wall, deflection-suppressed system designed reduce displacement and enhance cables. Theoretical method about cable offered with multi-boundary constraints validated by finite element method. With application analysis, the results show regulation under different boundary conditions. When tensions increase, minimum increases rapidly later tends vary...

To obtain the theoretical basis and reference for selection of low ductility aluminum alloy joining methods, three kinds joints were obtained using 7075-T6 sheets clinching, self-piercing riveting (SPR), resistance spot welding (RSW) joints, single-lap shear tests performed on fatigue conducted clinched SPR joints. The fracture joint was analyzed scanning electron microscopy (SEM) X-ray energy-dispersive spectroscopy (EDS). results showed that demonstrated best static performance, followed...

An internal ratchet model is established, in which a force-free system coupled to subsystem with asymmetric periodic structure, while the latter thermal bath environment. The average velocities of particles driven by signal two ways are calculated respectively. In comparison result external same parameters, our results show that maximum directional current larger than ratchet. Under temperature, more prone movement.

Allulose is a rare sugar that provides <10% of the energy but 70% sweetness sucrose. has been shown to attenuate glycemic responses carbohydrate-containing foods in vivo. This study aimed determine optimal allulose dose for minimizing vitro glucose release from rice compared control and fructose. A triphasic static digestion method was used evaluate co-digestion with (10 g, 20 40 g) fructose (40 g). In affected by treatment (

Flow calorimetric measurements of the excess molar enthalpy, HEm, [0.5C2H5OH + 0.5C6H14](g), 0.5C6H12](g) and 0.5C6H6](g) are reported. The extend over temperature range 453.5 to 522.9 K at pressures up 4.5 MPa. Residual enthalpies hexane, cyclohexane benzene were calculated from equation state proposed by Kubic, residual enthalpy ethanol was a modification Kubic's Massucci Wormald. For in its interaction with hexane or there is no hydrogen bonding, can be fitted applying simple one-fluid...

Since it is difficult for lateral stiffness of rope-guided rails to meet industry criteria in deep construction shaft, schematic diagrams displacement suppression mechanisms (DSMs) are designed with a systematic approach demonstrated reduce the this paper. DSMs simplified as planar four-bar and six-bar topological graphs based on theory. Each corresponding mechanical chain these divided into rack, parts, prismatic, revolute joints. An extended adjacency matrix defined represent rack...

We study analytically and numerically the probability density function in stationary state of non-linear oscillators which are subjected to Lévy white noise confined by a steep symmetric potential. The transforms from unimodality bimodality or trimodality when potential single well double well; especially, shows peak at saddle point This result is far Gibbs-Boltzmann statistics.

As to spiral groove grinding, a formed wheel was needed be designed and manufactured conventionally based on envelope theory, then this used grind the specified groove. This paper tried find other way manufacture with common dish wheels. A generic model for grinding is presented in paper, geometries can calculated under certain parameters. The relations between parameter were studied numerically. To wheels no special designed. method offers new grinding. technology also makes virtual...

As to spiral groove grinding, convertionally was based on envelope theory, a formed wheel needed be designed and manufactured, then this used grind the specified groove. This paper tried find other way manufacture with common disc or dish wheels. A generic model for grinding is presented in paper. With model, geometries can calculated under certain parameters. The relations between parameter were studied numreically. test done results proved correct. technology make virtual machining...

In this study, an orthogonal experiment was conducted to investigate the effects of various process parameters on mechanical properties resistance spot welding joints in AA7075-T6 aluminum alloy. A numerical simulation also performed determine optimal parameter combination. The properties, macro-morphology, and microstructure were characterized analyzed through a series tests including tensile testing, super depth-of-field metallographic observation, microhardness testing. results show that...

Abstract The effect of t ‐butyl peroxybenzoate (TBPB) on the cure reaction QY8911‐3 resin (BMI) was studied by differential scanning calorimetry (DSC) and gel time analysis. mechanical properties composite were tested analyzed with peroxide content. results showed that TBPB decomposed between 117 191°C enthalpy 1123 J/g. reduced initial temperature, prompted speed, shortened BMI resin. also increased bending strength decreased impacting postcured samples. So, content should be less than...