Deviation-Function Based Pitch Curve Modification for Conjugate Pair Design

1999 ◽  
Vol 121 (4) ◽  
pp. 579-586 ◽  
Author(s):  
D. C. H. Yang ◽  
S.-H. Tong ◽  
J. Lin
Keyword(s):  
Mechanical Properties ◽  
Function Method ◽  
New Method ◽  
Conjugate Pair ◽  
Deviation Function ◽  
Deviation Functions ◽  
Pitch Curve

In this paper a method for generating new conjugate kinematic pairs is developed. This method, called the “Deviation-Function ” method, is to use deviation functions to reshape the original pitch pairs so that the desired profiles of generated pairs can be obtained. A deviation function is defined as the distance between contacts and their corresponding instant centers of two conjugate pairs. In other words, a deviation function measures the amount of deviation of a point on the generated profile from its corresponding point on the original pitch profile. As demonstrated, this new method is applicable to any type of pitch pairs including circular or noncircular and identical or nonidentical. In addition, by using this method, it is relatively easier to realize desired geometrical and mechanical properties into the design.

A Deviation-Function Method for the Design of New Conjugate Kinematic Pairs

1998 ◽  
Author(s):  
Daniel C. H. Yang ◽  
Shih-Hsi Tong
Keyword(s):  
Function Method ◽  
New Method ◽  
Conjugate Pair ◽  
Deviation Function ◽  
Analytical Properties ◽  
Pair Generation ◽  
Deviation Functions ◽  
Geometric Intuition

Abstract In this paper a method for generating new conjugate kinematic pairs is developed. This method, called the “Deviation-Function” method, is to use deviation functions to reshape the original pitch pairs so that the desired profiles of generated pairs can be obtained. A deviation function is defined as the distance between contacts and their corresponding instant centers of two conjugate pairs. In other words, a deviation function measures the amount of deviation of a point on the generated profile from its corresponding point on the original pitch profile. As demonstrated, this new method is superior to the existing methods for conjugate pair generation in three ways: 1. it is applicable to any pitch pairs including circular or noncircular, identical or non-identical; 2. it enables the design of geometric intuition into the generated profiles; and 3. it enables the design of special analytical properties to the generated profiles.

A Pressure Angle Function Method for Describing Tooth Profiles of Planar Gears

2009 ◽  
Vol 131 (5) ◽  
Author(s):  
Lin Jing
Keyword(s):  
Mechanical Properties ◽  
Mathematical Model ◽  
Function Method ◽  
Angular Displacement ◽  
New Method ◽  
Geometric Properties ◽  
Geometric Characteristics ◽  
Pressure Angle ◽  
Angle Function ◽  
General Mathematical Model

A general mathematical model for describing the geometries and the geometric characteristics of meshing tooth profiles of planar gears is established. The function of pressure angle in the angular displacement of gears, called the pressure angle function (PAF), is introduced to characterize this model. The different tooth profiles and their geometric properties could be generated and analyzed logically and systematically by using this model and defining various PAFs. This new method is applicable to any type of gear pairs including circular or noncircular. In addition, by using this method, it is relatively easy to realize the desired geometrical and mechanical properties into the design.

A New Method for Detecting the Diameter and Spatial Location of Tiny Through-Hole

2011 ◽  
Vol 189-193 ◽  
pp. 4186-4190 ◽  
Author(s):  
Zhi Gen Fei ◽  
Jun Jie Guo ◽  
Chang Shi Li
Keyword(s):  
Image Processing ◽  
Function Method ◽  
Optical Axis ◽  
Spatial Location ◽  
Processing Technique ◽  
New Method ◽  
Image Processing Technique ◽  
Experimental Platform ◽  
Digital Image Processing Technique ◽  
Through Hole

Aiming at the problem that the traditional plunged-bar method is difficult to meet the measurement requirement of spatial location of thin and small through-hole, in this paper, the digital image processing technique combined with sub-pixel detection technique is employed, and a new method is proposed to detect the tiny through-holes. The evaluating function method based on the “roundness” of the image of hole is presented to find out the posture parameters of CCD where the optical axis of CCD is parallel to the centerline of hole. Therefore, the spatial location of hole can be easily obtained by these posture parameters. Meanwhile, the diameter of hole can be achieved by means of image measuring technology at calculated posture of CCD. Owing to the non-contact measurement, this method is particularly suitable for those small through-holes drilled on the soft and easy-deformed object. The experiment results on the experimental platform illustrate the feasibility and validity of this method.

Fixed-angle rotary shear as a new method for tailoring electro-mechanical properties of templated graphene–polymer composites

2014 ◽  
Vol 100 ◽  
pp. 70-75 ◽  
Author(s):  
Nicholas Heeder ◽  
Abayomi Yussuf ◽  
Indrani Chakraborty ◽  
Michael P. Godfrin ◽  
Robert Hurt ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Polymer Composites ◽  
New Method ◽  
Fixed Angle ◽  
Rotary Shear

scholarly journals Influence of nanocellulose on the hydration process of Portland cement and concrete properties

2020 ◽  
Vol 17 (5) ◽  
pp. 155-160
Author(s):  
V. I. Khirkhasova ◽  
Keyword(s):  
Mechanical Properties ◽  
Portland Cement ◽  
Physical And Mechanical Properties ◽  
Cement Composite ◽  
High Density ◽  
Strength Characteristics ◽  
New Method ◽  
Concrete Properties ◽  
Hardening Process ◽  
Study Results

The paper deals with modification of cement composite and concrete with nanocellulose in low and high density. The author presents the study results of the influence of nanocellulose on the cement composite hardening process, as well as the physical and mechanical properties of heavy concrete. The influence of the used additive on the rheological and strength characteristics of concrete is revealed. A new method is proposed to improve the material performance.

scholarly journals New Method for Diagnostic of Heat Engineering and Mechanical Properties of Cellular Concrete

2019 ◽  
Vol 9 (1) ◽  
pp. 6885-6887
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Information Technology ◽  
Optical Method ◽  
New Method ◽  
Modern Approach ◽  
Heat Engineering ◽  
Aerated Concrete ◽  
Pore Arrangement ◽  
Cellular Concrete

The article presents the results of studies assessing the structure of cellular concrete using a photo-optical method based on the use of a modern approach from the standpoint of information technology. Based on the photo-optical method, a reverse formulation of the problem is also possible: on the basis of a given percentage of porosity of the material, obtain the most optimal pore arrangement (type of packaging) that meets the specified strength and thermal conductivity of aerated concrete. Having a specific type of image of aerated concrete obtained as a result of modeling, otherwise, a specific type of packing of pores of certain sizes that meets the required (specified) characteristics, then, we can set the technological task of obtaining it.

Enthalpy Calculation of Flue Gas from Pressurized Oxy-Coal Combustion Based on Real Gases

2013 ◽  
Vol 325-326 ◽  
pp. 340-345
Author(s):  
Jing Lan Dong ◽  
Wei Ping Yan ◽  
Chao Hui Zhang
Keyword(s):  
Flue Gas ◽  
Atmospheric Pressure ◽  
Coal Combustion ◽  
Function Method ◽  
Ideal Gas ◽  
Virial Equation ◽  
Flow Sheet ◽  
Fuel Gas ◽  
Deviation Function ◽  
Classic Approach

The oxy-fuel combustion is recognizing one of the most promising available technologies that zero emission accomplishment may be in the offing. With coal burned at the pressure of 6MPa and oxygen-enriched conditions, the high temperature and high pressure gaseous combustion product is composed of mainly CO2and water-vapor that belonging to real gases. However, once lauded as classic approach of resolving fuel gas enthalpy calculation pertaining to ideal gas at atmospheric pressure was restrained by pressure limitations. In this paper, the flue gas was assumed as an ideal mixture of real gases system, and the equations for calculating the flue gas enthalpy were derived by using deviation function method based on the virial equation. Consequently, comparing with the results simulated by the flow-sheet simulation 2éÕÒ: software" software-ASPEN PLUS, it showed that calculation method on the basis of virial equation appears to be a reasonable enthalpy values for the pressurized oxygen-enriched coal combustion.

Sign in / Sign up

Export Citation Format

Share Document