The Purpose of FMVSS U. ▫. CFR = Code of Federal Regulations. ▫. “This standard specifies requirements to afford impact protection for. Internationally there are two important regulations regarding the design of interiors, such as cockpits, roof and door liners: The U.S. FMVSS and the. /Tuesday, September 11, /Rules and Regulations .. driver’s seating position in an FMVSS No. pole impact test, or (b) HIC15 performance of .
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Although it was 2011 developed for metals, it is commonly used for polymers as well. Locate the horizontal plane Plane 5 containing the highest point at the intersection of the dashboard and the A-pillar.
Other door frame means the rearmost perimeter structure, including trim but excluding glass, of the forward door and the forwardmost perimeter structure, including trim but excluding glass, of the rear door of a pair of adjacent side doors that:. Pillar means any structure, excluding glazing and the vertical portion of door window frames, but including accompanying moldings, attached components such as safety belt anchorages and coat hooks, which:.
Movable windows and vents shall be placed in the fully open position. This paper investigates the advantages and disadvantages of various types of these knee impact simulations.
If the seat belt mounting structure is below f,vss horizontal plane passing through CG-F2 for the right seat, locate the point mm directly below that CG-F2 and locate a line formed by the shortest horizontal distance between that point and the right seat belt mounting structure.
Target FH2 is located at the intersection of Plane 21 and the upper vehicle interior, halfway between a transverse vertical plane Plane 22 through Point 10 and a transverse vertical plane Plane 23 through the intersection of Plane 21 and Line 3. Locate a transverse vertical plane Plane 31 containing either CG-F2 or CG-R, as appropriate, for any outboard designated seating position. If the adjacent door s or daylight opening s are equidistant to Plane 27, Point 15 is located on the vehicle interior at the intersection of Plane 27 and either horizontal plane through the highest regulafion of each door or daylight opening.
Both regulations stipulate requirements concerning the maximum head acceleration or the HIC in impacts on interior parts. Tegulation rigid material between 13 and 32 mm from the panel surface shall have a minimum vertical height of not fmvxs than 25 mm. The load placed in the cargo area shall be centered over the longitudinal centerline of the vehicle.
Initially, adjustable seats shall be adjusted as specified in S8. A 0 degree vertical vector in Table I coincides with the horizontal plane and a vertical vector of greater than 0 degrees in Table I makes an upward angle of the same number of degrees with that plane.
Locate the point Point 19 at the intersection of the surface of the upper vehicle interior, Plane 29 and the plane, described in S8. The B-pillar reference point Point BPR is the point located at the middle of the line from Point 3 to Point 4 in Plane 7, measured along the vehicle interior surface. For front outboard designated seating positions, the head center of gravity with the seat in its forwardmost adjustment position CG-F1 is located horizontally forward of CG-F2 by the distance equal to the fore-aft distance of the seat track.
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Head Impact on Vehicle Interiors: FMVSS 201 and UN R21
The rigid pole is a vertical metal structure beginning no more than millimeters 4 inches above the lowest point of the tires on the striking side of the test vehicle when the vehicle is loaded as specified in S8. The front end of the line is regulattion as Point P. Using the same method, draw a line from Point b to Point d. Mid-sagittal plane of a dummy means a longitudinal vertical plane passing through the seating reference point of a designated seating position.
The position of the dummy is then measured as follows. Target BP3 is the point located in Plane 10 and on the interior surface of the B-pillarwhich is closest to CG-F 2 for the nearest seating position.
This has given rise to a corresponding number of knee impact simulations performed at various stages of product development. A 0 degree horizontal vector and a degree horizontal vector point in the positive X direction; a 90 degree horizontal vector points in the positive Y direction; a degree horizontal vector points in the negative X direction; and a horizontal degree vector points in the negative Y reglation.
The requirements do not apply to any targets that cannot be located by using the procedures of S Locate the point Point 6 at the intersection of the interior roof surface, Plane 12 and the plane, described in S8. In a workshop exemplary head impact locations in a vehicle interior and impact areas on a dashboard are determined.
Srikanth Krishnaraj – Profile – SAE International
2001 Radii of these spheres are mm and mm, respectively. Doors, including any rear hatchback or tailgate, shall be fully closed and latched but not locked. Locate a horizontal plane Plane 42containing CG-R for any outboard designated seating position rearward of the forwardmost designated seating position or positions whose seating reference pointSgRP, is rearward of and closest to, the ffmvss center line of the width of the seat belt mounting structureas viewed laterally.
Brace means a fixed diagonal structural member in an open body vehicle that is used to brace the roll-bar and that connects the roll-bar to revulation main body of the vehicle structure. At the time of launch, the midsagittal plane of the headform is vertical and the headform is upright. The minimum horizontal approach angle for the right A-pillar equals degrees minus the regulagion formed by that line and the X-axis of the vehicle, measured counterclockwise.
The area of the vehicle to be impacted by the headform is marked with a solid circle Door opening means, for door openings on the side of the vehicle, the locus of all points where a horizontal lineperpendicular to the vehicle longitudinal centerline, is tangent to the periphery of the side door opening. Seat belt anchorage means any component involved in transferring seat belt loads to the vehicle structure, including, but not limited to, the attachment hardwarebut excluding webbing or straps, seat frames, seat pedestals, and the vehicle structure itself, whose failure causes separation of the belt from the vehicle structure.
If this is not sufficient to produce the 50 mm 2 inches distance, the seat is moved forward until the 50 mm 2 inches distance is achieved or until the knees of the dummy contact the dashboard or knee bolster, whichever comes first. The midsagittal plane of the headform is designated as Plane S.
Head Impact on Vehicle Interiors: FMVSS and UN R21 – Empowering Engineers
The X-Z plane is the vertical longitudinal zero plane and is parallel to the longitudinal centerline of the vehicle. The top, if any, of convertibles and open-body type vehicles is in the closed passenger compartment configuration.
The top, if any, of convertibles and open-body regjlation vehicles shall be in the closed passenger compartment configuration.
Determination of impact locations in a vehicle Development process and methods Solving of conflicts of objectives Typical deformation paths, padding materials. Target OP2 is the point located on the interior surface of the pillar fmvsx the intersection of Plane 15 and the centerline of the width of the pillaras viewed laterally. Construct a line in the plane that contains the rearward point of the front door daylight opening and is perpendicular to the longitudinal vehicle centerline.
The requirements do not apply to any target that cannot be located using the procedures of S The minimum horizontal approach angle for the left seat belt mounting structure equals the angle formed by that line and the X-axis of the vehicle measured counterclockwise. For determination of head center of gravity, all directions are in reference to the seat orientation.
The Y coordinate is negative to the left of the X-Z plane and positive to the right. Locate a horizontal plane Plane 14 passing through the lowest point of the daylight opening forward of the pillar. Vehicles manufactured by final stage manufacturers on or after September 1, shall, except as provided in S6.