Tuesday, May 31, 2011

Tire design : Tire stiffness

The vertical tire force (Fz) can be calculated as a linear function of the normal tire deflection (z) measured at the tire center.
Fz = kz*z
the coefficient kz is call tire stiffness in the z direction. Similarly, the reaction of a tire to a lateral and longitudinal force can be approximated by
Fx = kx*x
Fy = ky*y
When kx , ky are called tire stiffness in the x and y directions.
The stiffness curve can be influenced by many parameter. The most effective one is the tire inflation pressure. Lateral and longitudinal force/deflection behavior is also determined experimentally by applying a force in the apporiate direction. The lateral and longitudinal force are limited by the sliding force when the tire is vertically loaded. The coefficient kx and ky are called tire stiffness . They are measured by the slope of the experimental stiffness curve. When the longitudinal and lateral force increases, part of the tire footprint creep and slide on the ground until the whole tire footprint starts sliding. At this point. the applied force saturates and reaches its maximum supportable value. Generally, a tire is most stiff in the longitudinal direction and least stiff in the lateral direction.
kx > kz > ky
Tire with a larger of plies have higher damping, because the plies’ internal friction generate the damping. Tire damping decreases by increasing speeds.

1 comment:

  1. It was during my research on HIV/Herpes that I stumbled upon the Hiv/Herpes information; information which is quite easy to find when doing a search for STD on google. I was into conspiracy at the time thought of HIV/Herpes Cured' being a conspiracy was something Ignorance though,I found pretty interesting about herbal medicine. I asked questions about the Herbal cure's on official HIV/Herpes websites and I was banned for doing so by moderators who told me that I was parroting Hiv/Herpes propaganda. This reinforced my belief that there is a cure for Hiv/Herpes Then i found a lady from germany name Achima Abelard Dr Itua Cure her Hiv so I send him a mail about my situation then talk more about it and send me his herbal medicine I drank for two weeks.And today I'm Cured no Hiv/Herpes in my life,I searched for Hiv/Herpes groups to attempt to make contact with people in order to learn more about Hiv/Herpes Herbal Cure's I believed at this time that you with the same disease this information is helpful to you and I wanted to do the best I could to spread this information in the hopes of helping other people.That Dr Itua Herbal Medicine makes me believes there is a hope for people suffering from,Parkinson's,Alzheimer’s disease,Bechet’s disease,Crohn’s disease
    ,Cushing’s disease,Heart failure,Multiple Sclerosis,Hypertension,Colo_Rectal Cancer,Lyme Disease,Blood Cancer,Brain Cancer,Breast Cancer,Lung Cancer,Kidney Cancer,Love Spell,psoriasis,Lottery Spell,disease,Schizophrenia,Cancer,Scoliosis,Fibromyalgia,Fluoroquinolone Toxicity Syndrome Fibrodysplasia Ossificans Progressiva.Infertility,Tach Disease ,Epilepsy ,Diabetes ,Coeliac disease,,Arthritis,Amyotrophic Lateral Sclerosis,Autism,Alzheimer's disease,Adrenocortical carcinoma.Asthma, (measles, tetanus, whooping cough, tuberculosis, polio and diphtheria)Allergic diseases.Parkinson's disease,Schizophrenia,Lung Cancer,Breast Cancer,Colo-Rectal Cancer,Blood Cancer,Prostate Cancer,siva.Fatal Familial Insomnia Factor V Leiden Mutation ,Epilepsy Dupuytren's disease,Desmoplastic small-round-cell tumor Diabetes ,Coeliac disease,Creutzfeldt–Jakob disease,Cerebral Amyloid Angiopathy, Ataxia,Arthritis,Amyotrophic Lateral Scoliosis,Fibromyalgia,Fluoroquinolone Toxicity
    Syndrome Fibrodysplasia Ossificans ProgresSclerosis,Seizures,Alzheimer's disease,Adrenocortical carcinoma.Asthma,Allergic diseases.Hiv_ Aids,Herpe ,Copd,Glaucoma., Cataracts,Macular degeneration,Cardiovascular disease,Lung disease.Enlarged prostate,Osteoporosis.
    Dementia.Lung Cancer, Leukemia Lymphoma Cancer,
    Lung Mesothelioma Asbestos,
    Ovarian Cervical Uterine Cancer,
    Skin Cancer, Brain Tumor, ,Hiv_ Aids,Herpes,Inflammatory bowel disease ,Copd,Diabetes,Hepatitis,Lupus,I read about him online how he cure Tasha and Tara,Conley,Mckinney and many more suffring from all kind of disease so i contacted him . He's a herbal doctor with a unique heart of God, Contact Emal. ... drituaherbalcenter@gmail.com Phone or whatsapp..+2348149277967.

    ReplyDelete