نتایج جستجو برای: crank

تعداد نتایج: 2024  

2013
Kuldeep B Mohammed Faheem

Connecting rod is the intermediate link between the piston and the crank. And is responsible to transmit the push and pull from the piston pin to crank pin, thus converting the reciprocating motion of the piston to rotary motion of the crank. Generally connecting rods are manufactured using carbon steel and in recent days aluminium alloys are finding its application in connecting rod. In this w...

2011

In this article, we aim to discuss the formulation of two explicit group iterative finite difference methods for time-dependent two dimensional Burger’s problem on a variable mesh. For the non-linear problems, the discretization leads to a non-linear system whose Jacobian is a tridiagonal matrix. We discuss the Newton’s explicit group iterative methods for a general Burger’s equation. The propo...

2013
KATHRIN BRINGMANN KARL MAHLBURG

Andrews, Chan, and Kim recently introduced a modified definition of crank and rank moments for integer partitions that allows the study of both even and odd moments. In this paper, we prove the asymptotic behavior of these moments in all cases. Our main result states that the two families of moment functions are asymptotically equal, but the crank moments are also asymptotically larger than the...

2009
H. Nakano T. Oka K. Hirose

This paper describes the radiation characteristics of crank-line antennas radiating a circularly polarized wave. First, the radiation efficiency versus substrate permittivity is evaluated. Second, a 12-cell crank-line antenna of substrate permittivity "r = 1 and antenna height B = 11:85=8 is investigated as a reference antenna, where 11:85 is the wavelength at a frequency of 11.85 GHz. It is fo...

2009
BYUNGCHAN KIM B. KIM

In a series of papers, H.-C. Chan has studied congruence properties of a certain kind of partition function that arises from Ramanujan’s cubic continued fraction. This partition function a(n), is defined by ∑∞ n=0 a(n)q n = 1 (q;q)∞(q2;q2)∞ . In particular, he proved that a(3n + 2) ≡ 0 (mod 3). As Chan mentioned in his paper, it is natural to ask if there exists an analog of the rank or the cra...

1988
GEORGE E. ANDREWS F. G. GARVAN F. J. Dyson

holds. He was thus led to conjecture the existence of some other partition statistic (which he called the crank); this unknown statistic should provide a combinatorial interpretation of ^-p(lln + 6) in the same way that (1.1) and (1.2) treat the primes 5 and 7. In [4, 5], one of us was able to find a crank relative to vector partitions as follows: For a partition 7r, let #(7r) be the number of ...

Journal: :Journal of biomechanics 1997
C C Raasch F E Zajac B Ma W S Levine

A simulation based on a forward dynamical musculoskeletal model was computed from an optimal control algorithm to understand uni- and bi-articular muscle coordination of maximum-speed startup pedaling. The muscle excitations, pedal reaction forces, and crank and pedal kinematics of the simulation agreed with measurements from subjects. Over the crank cycle, uniarticular hip and knee extensor mu...

2017
L. Malfait

Several studies have been published on the use of eccentric and non-circular chainrings. The findings of these studies have, however, not been consistent. Despite the lack of consistent positive results in terms of physiological responses, a consensus appears to prevail that the improved mechanical effectiveness of the oval chainring may lead to performance enhancement (e.g. increased crank pow...

2014
H. J. Kim J. K. Lee D. K. Shin Dong K. Shin

This paper presents a new design method of balance weights with phase angles for scroll compressors. Based on force and moment balances on crankshaft and compressor frame, mathematical formulation of shaft bearing loads, unbalanced force and moment acting on the frame has been made in terms of balance weight design parameters such as masses and phase angles of the upper and lower balance weight...

Journal: :The Astrophysical Journal Supplement Series 2016

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