determination of optimum preload considering the

Finding and Fixing Vehicle NVH Problems with Transfer

2018-3-9ing optimum and attribute-balanced solutions to complex NVH issues late in the development process Experimental transfer path analysis (TPA) is a fairly well established technique 1 2 for estimating and ranking individual low-frequency noise or vibration contributions via the differ-ent structural transmission paths from point-coupled power-

How is gasket stress defined in industry?

2011-7-21are considering gasket stress based on the same gasket com-pressed area ASME Boiler and Pressure Vessel Code calcula-tions for the initial bolt load requirement or operating condi-tion (Wm1) and the gasket seating condition (Wm2) are based upon an effective gasket area which in the case of Wm2 can be as little as half the ACTUAL compressed area

Bolt Torque Calculator

The bolt material most commonly steel resists this natural stretching and creates a clamping force upon the assembled substrates Similarly the substrate materials resist compression to balance the clamping pressure this is known as the joint preload A correctly-tightened bolt shares the preload with workpieces

Algorithms

The optimum solution can be selected in section BC by the designer considering the values of σ m and S 2 The final selected optimum Pareto solution of the sealing performance indices were σ m = 544 7 MPa and v σ = 107 02 10 2 and the corresponding optimum structure parameters were α = 25 10 and b = 29 11 mm respectively

Ground Improvement Optimization with Prefabricated

2015-12-15(kh /kv Cv C h CR) significantly affects the determination of the optimum combination of PVD spacing and preloading height and the minimum ground improvement cost and therefore should be properly evaluated in design Table 1 Soil profile properties Thickness of compressible layer H (m) 10 - 25 Compression ratio CR=C c/(1+e 0) 0 15 0 30

Does the manual insertion torque of smartpegs affect

2019-12-12When considering an insertion force of 1 Ncm as tested in the in vitro trial of Gickeli et al the transducer device is inserted so minimally that it is mostly just seated into the implant None of the clinicians in the current study achieved such a low level of force during manual insertion

Development of Graphical Solution to Determine

Roller 1 optimum hollowness should be 52% for the applied load of 5414 28 N Roller 2 optimum hollowness should be 39% for the applied load of 10397 88 N Roller 3 optimum hollowness should be 45% for the applied load of 21620 59 N Roller 4 optimum hollowness should

Simulation Calculation and Test

2019-9-20Determination of force and motion patterns of the rolling elements and rings taking all degrees of freedom into consideration CABA3D facilitates the calculation of the frictional energy and the acceleration behavior of the rolling elements e g when they enter the load zone

Estimating cardiac output Utility in the clinical

In academic terms the normal CO range in the healthy adult is about 4–6 5 l/min (2 5 l/min per m 2 body surface would be the corresponding cardiac index) under resting conditions However cardiac output as the main determinant of oxygen transport to the different body regions must be adapted to the needs of the body at all times therefore as a single or isolated piece of information

Perfusion MRI in treatment evaluation of

A bolus of contrast agent (0 1 mmol/kg) should be administered ∼20 seconds (5–30) after the start of acquisition at a minimal injection rate of 3 mL/s 11 12 The use of a preload bolus is also recommended to limit leakage effects in DSC with a dosage given as preload at the same injection rate 5–10 minutes prior to the remaining

Ratios of soluble and insoluble dietary fibers on

The current study used a time delay of 3 h between preload and test meal which is in line with other research considering preload energy (∼500 kcal) and the fiber types we used While we did not observe a significant effect of preloads on energy intake at the test meal there was a general trend for increased intake after the IF meal

How is gasket stress defined in industry?

2011-7-21are considering gasket stress based on the same gasket com-pressed area ASME Boiler and Pressure Vessel Code calcula-tions for the initial bolt load requirement or operating condi-tion (Wm1) and the gasket seating condition (Wm2) are based upon an effective gasket area which in the case of Wm2 can be as little as half the ACTUAL compressed area

Inflammation in Circulation

The following articles are being highlighted as part of Circulation's Topic Review series This series will summarize the most important manuscripts as selected by the editors published in Circulation and the Circulation subspecialty journals The studies included in this article represent the articles related to inflammation that were published in Circulation in 2010 and 2011

Influence of Abutment Screw Design and Surface

As internal junctions an external-hex butt joint axial preload of the abutment screw stabilizes the connection between the abutment and the implant fixture 3 When the implant set is submitted to functional loads occlusal forces to the connection are concentrated at the abutment screw 4 Consequently the optimum preload is critical for

Determination of Optimum Preload Considering the

Determination of Optimum Preload Considering the Skidding and Thermal Characteristic of High-Speed Angular Contact Ball Bearing Bin Fang Bin Fang Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System Xi'an Jiaotong University Xi'an 710049 China

Bolt Torque Calculator

The bolt material most commonly steel resists this natural stretching and creates a clamping force upon the assembled substrates Similarly the substrate materials resist compression to balance the clamping pressure this is known as the joint preload A correctly-tightened bolt shares the preload with workpieces

Role of Sensory

Erdem demonstrates the usefulness of considering attribute satiation in generating maps of market structure Using a factor analytic specification she estimates the utility of products in terms of two composite attributes (unobservable to the analyst) that can be interpreted as factors underlying the attribute structure

Integrated Dynamic Thermo

Harkany I 1961 "The Determination of the Optimum Bearing Distance with regard to Bearing Stiffness in the Case of Shafts with Constant and Variable Cross Sections Respectively " Machine Tool Industry Research Association Translation Vol 33 pp 103–117

Influence of Abutment Screw Design and Surface

As internal junctions an external-hex butt joint axial preload of the abutment screw stabilizes the connection between the abutment and the implant fixture 3 When the implant set is submitted to functional loads occlusal forces to the connection are concentrated at the abutment screw 4 Consequently the optimum preload is critical for

Modeling of high

Bearing stiffness which varies as a function of the preload cutting force and spindle speed is the fundamental nonlinearity in the dynamics of high-speed spindles A nonlinear finite element model of the angular contact ball bearing is formulated by considering both centrifugal forces and gyroscopic moments from the rolling elements of the

Integrity Assessment of Headcovers and Headcover

2018-8-8Determination of the effect of a variation in preload tensions in the fasteners Estimation of the minimum effective bolt area subject to corrosion Calculation of critical flaw curves for regions of peak tensile stress Performing a modal analysis considering the first 10 vibration modes of

The latest preload technology of machine tool

2017-11-11Recently the studies of machine tool spindles for high-speed and high-precision have been actively performed to produce high-valueadded products The spindle has a great influence on the performance of the machine tool In particular the preload method and the amount of preload applied to the bearings inside the spindle are properly determined to maintain high performance of the spindle

Table 1 provides a list of the most important balance properties that should be assessed during performance qualification Depending on the risk of the application and the required weighing process tolerance some of these tests may be omitted Tests also can be omitted if there is evidence that the property in question has only minimal effect on the weighing performance

Structural Effects of Cellulose on Hydrolysis and

2020-6-2This study aims to investigate how the morphology of cellulose influences the hydrolysis and carbonization during hydrothermal treatment at temperatures between 180 and 240 C The morphology of cellulose especially different crystallinities and degrees of polymerization is represented by microcrystalline cellulose and α-cellulose Kinetic analysis is considered a tool to allow the