Nonlinear Curve Fitting

Conduct Research

• Smarter FEA software unburdens users
  with a method that couples motion and stress analysis. This technique is used by software that simulates moving events, such as Algor's Mechanical Event Simulation (MES). MES uses nonlinear time-dependent FEA to account for the changing inertia, shape, and material behavior of the moving model all in one...
• High-end math package complements engineering work
  , and it performs both matrix and complex math. MC13 also solves ordinary differential and linear, nonlinear, and transcendental equations and computes derivatives and integrals (symbolically and numerically). Some of the many tools include programming, curve fitting, statistical functions, and data...
• Other Sensors
  . When measuring cold temperatures, for example, it is possible for the device to be warmer than the temperature being measured. Thermistors also are more nonlinear and curve-fitting polynomial equations or resistance-temperature lookup tables are often used to approximate temperature....
• Get Reliable Results From Rubber Test Data
  and over time. However, an FEA model is only as good as the material parameters it's based on. Getting good material data can be challenging enough for linear-design purposes, but elastomeric materials complicate matters with nonlinear and viscoelastic behavior. Nonlinearity arises from rotations...
• Shape and Refractive Index Recovery from Single-View Polarisation Images
  photometric stereo images for shape recovery. Using. property recovery [24]. a similar experimental setup to photometric stereo, Thilak. Shape and material properties are usually co-existing. et al. [18] presented a nonlinear least-squares estimation al-. factors that influence the appearance...
• Materials Engineering: Flow control: A novel use for porous metal
  . "The restrictor- flow predictive model accounts for the nonlinear relationship between pressure drop and flow rate by incorporating the basic fundamental equations to account for laminar, turbulent, and slip gas-flow regimes, gas compressibility, gas properties such as viscosity, molecular weight...
• Selection and Calibration of a Turbine Flow Meter (.pdf)
  at one viscosity, to obtain. corrected data at a different operating viscosity. As can be seen from the. nonlinear nature of the offset to the curve, a single correction factor is not. possible. In order to maintain the highest accuracy the flow meter should be. calibrated at the same viscosity...
• Measurement of Continuous Surface Shear Stress Vector Distributions (.pdf)
  of camera, which is typically. used in medical imaging applications, records the light intensity of the NTSC (National. Television Systems Committee) standard RGB components of the scattered light using. three CCD chips. Features that compensate for the nonlinear brightness response of the. human eye...

Engineering Web Search: Nonlinear Curve Fitting