111 |
An optical model analysis of some nuclear interactions : deuteron elastic scattering and strippingForest, A. E. January 1966 (has links)
No description available.
|
112 |
An approximate solution for the bending of a cylindrical shell with two longitudinal flanges and loaded with internal pressureMayhall, John Atkins. January 1958 (has links)
Call number: LD2668 .T4 1958 M39
|
113 |
High-performance series elastic actuationPaine, Nicholas Arden 28 October 2014 (has links)
Mobile legged robots have the potential to restructure many aspects of our lives in the near future. Whether for applications in household care, entertainment, or disaster response, these systems depend on high-performance actuators to improve their basic capabilities. The work presented here focuses on developing new high-performance actuators, specifically series elastic actuators, to address this need. We adopt a system-wide optimization approach, dealing with factors which influence performance at the levels of mechanical design, electrical system design, and control. Using this approach and based on a set of performance metrics, we produce an actuator, the UT-SEA, which achieves leading empirical results in terms of power-to-weight, force control, size, and system efficiency. We also develop general high-performance control techniques for both force- and position-controlled actuators, some of which were adopted for use on NASA-JSC's Valkyrie Humanoid robot and were used during DARPA's DRC Trials 2013 robotics competition. / text
|
114 |
Model based techniques for use by automated systems handling non-rigid materialsEvans, Benjamin Scott January 1994 (has links)
No description available.
|
115 |
Numerical analysis of indentation of strain-hardening materialYap, Wai Khee January 1992 (has links)
No description available.
|
116 |
Ultrasonic Wave Propagation on an Inclined Solid Half-Space Partially Immersed in a LiquidDao, Cac Minh January 2007 (has links)
The interaction between a bounded ultrasonic beam and a liquid wedge over a solid half-space is studied theoretically as well as experimentally. A semi-analytical technique called Distributed Point Source Method (DPSM) is adopted for modeling the ultrasonic field in a wedge-shaped fluid structure on a solid half-space. This study is important for analyzing and understanding the propagation of ultrasonic waves used for underwater communications and inspections. A better understanding of the elastic wave propagation in water and in submerged marine strata near the seashore requires extensive investigations of such problem geometries. The semi-analytical technique used in this dissertation considers a bounded acoustic beam striking a fluid-solid interface between a fluid wedge and a solid half-space. Solution of this problem is beyond the scope of the currently available analytical methods when the beam is bounded. However, it is important to model the bounded beams because, in all underwater communications and inspections, bounded beams are used. Currently, only numerical method [Boundary Element Method (BEM) or Finite Element Method (FEM)] based packages (e.g., PZFlex) are in principle capable of modeling ultrasonic fields in such structures. However, these packages are not very accurate and are very CPU-intensive for high-frequency ultrasonic problems. At high frequencies, FEM- and BEM-based packages require huge amount of computation memory and time for their executions that the DPSM technique can avoid. The effect of the angle variation between the fluid-solid interface and the fluid wedge on the wave propagation characteristics is studied and presented.
|
117 |
Stress analysis of elastic contact problems by the boundary element methodTakahashi, S. January 1989 (has links)
No description available.
|
118 |
Elements of a Lagrangian theory of localized bucklingWadee, Mohammad Khurram January 1993 (has links)
No description available.
|
119 |
Quantitative acoustic microscopy of coated materialsSklar, Zenon January 1993 (has links)
No description available.
|
120 |
Aspects of wave propagation in constrained and nearly constrained elastic bodiesRogerson, G. A. January 1987 (has links)
No description available.
|
Page generated in 0.0438 seconds