Mechanical Stress States in Heterogeneous, Wound Rolls
- Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
This paper presents a method of predicting the internal stress states in rolls wound with simultaneous supply spools of dissimilar material. The method is based on linear, orthotropic behavior of the mandrel and web materials, and is sufficiently general to allow completely arbitrary choices for the web materials and their respective winding tensions. The generality of the method also permits the introduction and termination of additional webs of arbitrary material at any time during the winding process. The method is analytical, and utilizes an elasticity solution with rigorous satisfaction of boundary conditions between each ply of the wound roll. A prototypical wound capacitor is used as an example to provide for numerical results of the internal stress states induced during the winding process. Differences in the winding tension loss of the two dissimilar web materials is discussed and explained, as are other mechanical threats to roll stability and performance. The influence of winding tension variations on internal, wound stress states is also discussed.
- Research Organization:
- Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 5900625
- Report Number(s):
- SAND--90-3049C; CONF-9105148--1; ON: DE91009257
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360601* -- Other Materials-- Preparation & Manufacture
360603 -- Materials-- Properties
ANALYTICAL SOLUTION
BOUNDARY CONDITIONS
CALCULATION METHODS
CAPACITORS
COMPOSITE MATERIALS
DATA
DIELECTRIC MATERIALS
ELASTICITY
ELECTRIC CONDUCTORS
ELECTRICAL EQUIPMENT
EQUIPMENT
FABRICATION
FORECASTING
HETEROGENEOUS EFFECTS
INFORMATION
Internal Stress Prediction
LAYERS
MATERIALS
MECHANICAL PROPERTIES
NUMERICAL DATA
NUMERICAL SOLUTION
PERFORMANCE
STABILITY
STRESSES
TENSILE PROPERTIES
THEORETICAL DATA
WINDING MACHINES
Winding Tension Variations