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Articles 1 - 5 of 5
Full-Text Articles in Mechanical Engineering
Finite Element Simulation Of Creep Buckling Of Cipp Liners Under External Pressure, Qiang Zhao
Finite Element Simulation Of Creep Buckling Of Cipp Liners Under External Pressure, Qiang Zhao
Doctoral Dissertations
The problem of long-term structural behavior of CIPP liners under external hydrostatic pressure has been characterized as a structural instability problem which is induced by time-dependent material deformation or creep. It is also a contact problem since the liner deflection is externally constrained by the host pipe. The intrinsically nonlinear problem is investigated by means of finite element simulation, with emphases on (a) the essential structural behaviors and mechanisms of buckling, and (b) the influences of inelastic material properties (i.e. yield strengths and creep rates) and geometrical parameters on liner's buckling resistance.
A liner first deforms as a free pipe …
Micro Hydro Power, Frederick J. Munster
Micro Hydro Power, Frederick J. Munster
Maine Collection
Micro Hydro Power
by Frederick J. Munster
Department of Economic and Community Development, August, Me. 1999 (?).
Contents: Introduction / History of Hydropower in Maine / Renewables / Why Micro Hydro / Determining Flow / Determining Head / Estimating Energy Potential / Hydro Turbines / Dams, Impoundments, Penstocks and Power Houses / Utility Interconnected Systems / Battery Charging Systems / Operation and Maintenance / Economics / Regulation of Hydro Development / For More Information / References
Bolt Bearing Behavior Of Engineered Wood Composites, Stephen J. Carstens, David Pollock
Bolt Bearing Behavior Of Engineered Wood Composites, Stephen J. Carstens, David Pollock
Faculty Publications - Biomedical, Mechanical, and Civil Engineering
The goal of this research was to gain a better understanding of the bolt bearing behavior of engineered wood composites made from yellow poplar lumber. Lumber specimens included in this study were laminated veneer lumber, strandbased lumber, yellow poplar lumber, and Douglas-fir larch lumber. Testing followed the half-hole and full-hole configuration as set forth in ASTM Standard D5764 (1998).
In a previous study by Wilkinson (1991), a strong correlation was shown between bearing strength perpendicular to grain and bolt diameter. This study supports Wilkinson's finding for bearing strength perpendicular-to-grain based on the half hole test configuration. Other findings in this …