McHenry invented HVOSM on which the 3D EDVSM is based and some McHenry proprietary extensions for the HVOSM program we allowed Calspan to use in the 80s for a Rollover project **.
EDC some how got the code and implemented it somehow and call it 'Advanced Models' mentioned in the AD.
- From the EDC advertisement:
- "Radial Spring Tire Model- This model allows for simulating tires mounting curbs and rolling over potholes. The tire is modeled as a series of springs lying in the tire plane and projecting radially outward from the wheel center".
- Raymond R. McHenry invented the Radial Spring Tire Model around 1969. See Ray’s 1969 IME paper "An Analysis of the Dynamics of Automobiles During Simultaneous Cornering and Ride Motions"
- (see page 31-32 (pg 4-5 of the linked paper since it is from a book with other papers)) Included in msmac3D
- Raymond R. McHenry invented the Radial Spring Tire Model around 1969. See Ray’s 1969 IME paper "An Analysis of the Dynamics of Automobiles During Simultaneous Cornering and Ride Motions"
- "Radial Spring Tire Model- This model allows for simulating tires mounting curbs and rolling over potholes. The tire is modeled as a series of springs lying in the tire plane and projecting radially outward from the wheel center".
- From the EDC advertisement:
- "Sidewall Impact Tire Model - This model is an extension of the Radial Spring Tire Model and allows for a rigorous modeling of the force applied to the sidewall of a tire such as occurs in a curb-tripped rollover. Each radial spring has springs projecting laterally from the wheel plane to the tire sidewall plane"
- Raymond & Brian McHenry invented the Sidewall Impact Tire Model around 1984 as part of research they performed for FHWA with respect to pavement shoulder drop-off simulation. See the Report Work Zones and Pavement Shoulder Drop off simulations (see page 112, etc. Included in msmac3D)
- "Sidewall Impact Tire Model - This model is an extension of the Radial Spring Tire Model and allows for a rigorous modeling of the force applied to the sidewall of a tire such as occurs in a curb-tripped rollover. Each radial spring has springs projecting laterally from the wheel plane to the tire sidewall plane"
- From the EDC advertisement:
- "Soft Soil Tire Model - This model allows for calculating tire drag for a vehicle that has left the roadway and is traveling through soft dirt, sand or similar material. The model is based on research performed by M.G. Bekker at the University of Michigan. In the model, tire sinkage into the soil is calculated using an empirical model developed by Bekker."
- Raymond & Brian McHenry Invented the Soft Soil Tire Model in the mid 1980’s as part of proprietary internal research and provided to Calspan for a FHWA rollover study "Rollover Potential of Vehicles on Embankments, Sideslopes and other Roadside Features"
- (see page 37). Included in msmac3D
- Raymond & Brian McHenry Invented the Soft Soil Tire Model in the mid 1980’s as part of proprietary internal research and provided to Calspan for a FHWA rollover study "Rollover Potential of Vehicles on Embankments, Sideslopes and other Roadside Features"
- "Soft Soil Tire Model - This model allows for calculating tire drag for a vehicle that has left the roadway and is traveling through soft dirt, sand or similar material. The model is based on research performed by M.G. Bekker at the University of Michigan. In the model, tire sinkage into the soil is calculated using an empirical model developed by Bekker."
- Thank you Engineering Dynamics!
For acknowledgement that our 30+ year old McHenry inventions and extensions are still advanced in 2015!
Please see information on our msmac3D program which includes those 'Advanced Tire Models' and many additional vehicle capabilities and enhancements we've created and enhanced for many more than 30+ years such as trailer options, articulated vehicle options, and much much more.
And any and all enhancements will be included in the msmac3D license.
For information on msmac3D please see our msmac3D General Q&A forum topic.[/list]
Please consider McHenry Software for your simulation and collision reconstruction technology!
Contact us at msmac3D@mchenrysoftware.com
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footnote:
** 1987 "Rollover Potential of Vehicles on Embankments, Sideslopes and other Roadside Features", Deleys, N. J., Parada, L.O, FHWA/RD-86/164, PB87-212783, Executive Summary Report (Proprietary HVOSM program w/extensions and refinements provided by McHenry & McHenry)