Seats Testing/Validation Concepting

Ownership

Research

Car Requirements

Safety Criteria:

• Adhere to all the safety specifications as listed by ASC

• Accommodate a five point safety harness

• integration of head, shoulder and side containment features into the seat

  • prevent lateral movement of the body

  • must ensure this does not interfere with egress and peripheral vision of the driver

    • not obstructing as much peripheral vision

• seat belt pass through should be right at the shoulder height of the driver

Line of Sight

• height adjust seems it will be risky

• Sliding seat (lateral movement)

• Tilting seat

  • might be risky like height adjustable one

  • seems more viable

Comfort

• support the human body and spine

• also conduct preliminary research into padding

  • Sheila will look into more of this

  • though you should still research to understand which materials will fit into the final design

• research into how seats are kept ventilated

Ideas i had/ things i thought about

• Depending on how we decide to hold things in place (ex glue) will have to test out if it is strong enough

• Testing the seatbelts to make sure they are functional

• Testing the materials chosen for the seat if it is comfortable, breathable etc

• Testing the vision requirements, must be able to see 700m from the ground when the chair is in standard position, certain angles etc

• Test and validate for ballast bag to make sure it doesn’t go flying (make sure it’s properly secured)

• Broken down into 2 Analysis - crash and safety and durability (what car companies use)

• Sled test is performed to test the the sled test performance include: strength of the seat anchorage and the adjustment, as well as the locking and displacement systems

• Height and weight for different ages https://www.engineeringtoolbox.com/body-weight-versus-height-d_1551.html

How other cars are tested

Crash and Safety :

• Seat Back Strength

• Seat Anchorage Dynamic Strength test

• Seat Structural Dynamic Test forward

• Strength of Seat Back Anchorage

• Luggage Retention / Partitioning Test 

• Head Restraint Energy Dissipation Test 

• Head Restraint Performance & Strength Test

• Seat-back Load Floor Test for Retention

Durability

• Head Restraint Lateral & Longitudinal Stability

• Vertical Load Strength of Cushion Frame 

• Seat Ornamentation & Knob Pull-off Strength 

• Actuator Strength in the Direction of Operation

• Seat-back Map Pocket Static Strength Requirements

• Seat-back Torsion Strength

• Jounce Test (Cushion & Back)

• Armrest Strength & Operating Effort

• Latch Catch Spring Test

• Jump Seat Strength

• Fatigue Resistance (seat structural fatigue durability test)

• Vibration Test for Resonance Point Detection

• Thermal Cycle Ageing Test or Creep Test 

How to attach the seat to bottom panel

Whats Needed if attaching a bracket to the panel

• Seat Brackets:
  You will need brackets made specifically for your car. If you’re installing two seats make sure you have one driver’s side bracket and one passenger’s side bracket. They are usually not interchangeable.

• Sliders (optional):
  If we are not sliding the seat forwards and backwards they can be omitted.

• Side Mount Brackets (for side-mount seats only):
  Can determine whether or not your seats are side mount by locating the mounting holes for the bracket. If they are on the sides of the seat, on the outsides of your thighs they are side mount seats. if they are on the bottom or underside of the seat they are bottom mount seats.

• Installation Hardware: At minimum 4 bolts for the seat bracket, 4 nuts and 4 bolts for the sliders (if applicable), and another 4 nuts and 4 bolts for the side mount brackets (if applicable). Depend on seat design

• Socket and Ratchet Set: For the majority of cars all that you’ll need is a few sockets, an extension, and a ratchet. For Japanese cars, the size sockets you’ll need are 14mm and/or 17mm. Depends on seat designs.

Assemble Your New Seats (bottom mount):

The first thing you should do is attach your seat brackets and (if applicable) sliders to seats.

1. Attach sliders to seat (if applicable): start by setting your seat down, on its side, on a soft surface. Locate the holes at each corner of your sliders (if there is more than one hole per corner, just choose one; you can always adjust it later) and line them up with the four holes on the bottom of the seat. Insert bolts through these holes and tighten them. (If you’re not using sliders, skip this step).

2. Attach seat bracket to sliders: for this step you might have to use the sliding mechanism on your slider to access the holes meant for the seat bracket. Once they’re lined up, slip 4 bolts through them and tighten them down with the corresponding nuts.

 Assemble Your New Seats:

1. Attach side mounts to sliders: line up the holes on each corner of the sliders to the holes on the front and back of the side mounts. Then slide bolts through them and tighten them down.

2. Attach sliders to seat brackets: simply line up the four holes on the sliders with the four holes on the seat bracket and slip the bolts through them. Thread the corresponding nuts onto the bolts you just installed. (If you’re not using sliders, skip this step.)

3. Attach seat to side mounts: slip your new seat in between the side mount brackets and line up the holes on each side of the seat with the holes on the side mount brackets. Then slip 4 bolts through the side mount brackets (2 on each side) and tighten them.

  Install Your New Seat:

1. Attach your factory seat belt buckle to your new seat bracket (if applicable): you may need a new bolt and a nut to install the buckle.

2. Maneuver your new seat into your vehicle: again, be careful to avoid scratching your car with the seat bracket.

3. Plug in electrical connectors: locate the electrical connectors that you unplugged from the factory seat, and connect them to your new seat. If your new seat can’t accommodate any of these connectors, leave them unplugged.

4. Line up the seat bracket: locate the four holes from which you removed the four bolts holding the factory seat in place and line them up with the four holes at the corners of the seat bracket of your new seat.

5. Bolt down the seat: install the original factory bolts in the reverse order of removal. If you’re using sliders, take advantage of them! Slide the seat back to install the front bolts, and then slide it forward to install the rears. Careful not to over tighten them!

6. Check your seating position: make sure that you can position the seat in a way that’s comfortable for you. If it’s not possible, pull the seat out and try mounting the seat using different holes on the brackets and sliders.

NOTE SJ SAID CHASSIS TEAM WILL TAKE OVER ADHESIVE USED TO ADHERE SEATS TO BOTTOM PANEL SO WE WILL USE GLUE

https://www.braumracing.com/universal-seat-installation-guide/

Risk/Unknowns Identification

What are the major technical risks or unknowns associated with this project?

Prompts for areas of investigation include regulation risks (i.e. headlight brightness doesn’t meet regs), mechanical risks (i.e headlight melting from high temperature), manufacturing/assembly risks (i.e how does headlight mount to aero body?)

Risk/Unknown Mitigation Concepting

What can we do to mitigate these aforementioned risks/unknowns?